### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 12:40pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/1 "2017-08-04T12:40:16Z")
Since my last discourse upgrade and rebuild I can no longer post anything on my forum:
The error log gives me this error:
```
MiniRacer::RuntimeError (Error: Could not find module `pretty-text/engines/discourse-markdown/bbcode` imported from `lib/discourse-markdown/formatting_bbcode`)
JavaScript at requireFrom (:128:13)
```
It also has some of these `Uncaught TypeError: Cannot read property 'addPreProcessor' of undefined` but those I have been seeing for a while, so these are probably not related to what I’m seeing now. I think [they are from the doi-resolver plugin](https://meta.discourse.org/t/doi-resolver-updated/38920/10) which I have long deactivated.
The browser console looks like this:
Any pointers where I should start?
~~UPDATE: I also just noticed that my installed plugins page is not working (no plugins shown):~~
---
### Author:  [@david](https://meta.discourse.org/u/david)
#### Post date: [August 4, 2017, 1:41pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/2 "2017-08-04T13:41:47Z")
> [@tophee](#):
>
> which I have long deactivated
‘Deactivating’ a plugin won’t necessarily protect against a lot of javascript issues. You could try uninstalling it completely.
Have you tried [safe mode](https://meta.discourse.org/t/53504?silent=true)?
Anything in the server logs?
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 2:05pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/3 "2017-08-04T14:05:24Z")
> [@david](#):
>
> ‘Deactivating’ a plugin won’t necessarily protect against a lot of javascript issues. You could try uninstalling it completely.
Yes, but I’ve had those errors for weeks and everything else was still working, so I’m trying to focus on the new errors first.
> [@david](#):
>
> Have you tried [safe mode](https://meta.discourse.org/t/53504?silent=true)?
Just did and it doesn’t seem to change anything. (What I did is: I entered [safe mode](https://meta.discourse.org/t/53504?silent=true) (at first only third party plugins then all) and tried to create a new topic. Result: 500 Error)
> [@david](#):
>
> Anything in the server logs?
This seems more promising:
```
2017/08/04 15:28:47 [crit] 3950#3950: *109357 connect() to unix:/var/discourse/shared/standalone/nginx.http.sock failed (2: No such file or directory) while connecting to upstream, client: 130.241. **.** , server: forum. *********.*** , request: "GET /logs/messages.json?filter=0_1_2_3_4_5&after=a74fb09d4601cbadaf2ece3db0d0c657 HTTP/2.0", upstream: "http://unix:/var/discourse/shared/standalone/nginx.http.sock:/logs/messages.json?filter=0_1_2_3_4_5&after=a74fb09d4601cbadaf2ece3db0d0c657", host: "forum. ********.***", referrer: "https://forum. ********.*** logs"
```
What does it mean?
@david, is it this: [Nginx.http.sock bind failed after reboot - #2 by countcb](https://meta.discourse.org/t/nginx-http-sock-bind-failed-after-reboot/29550/2)? Should I delete `/var/discourse/shared/standalone/nginx.http.sock`? And then what?
---
### Author:  [@Michael\_Furtenbach](https://meta.discourse.org/u/Michael_Furtenbach)
#### Post date: [August 4, 2017, 2:59pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/4 "2017-08-04T14:59:11Z")
I have the same Problem here since the Update today ☹
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 3:03pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/5 "2017-08-04T15:03:38Z")
> [@Michael\_Furtenbach](#):
>
> I have the same Problem here since the Update today
Do also have an outer NGINX with the same error in your server log?
---
### Author:  [@Michael\_Furtenbach](https://meta.discourse.org/u/Michael_Furtenbach)
#### Post date: [August 4, 2017, 3:05pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/6 "2017-08-04T15:05:16Z")
Update: After the Update of the Spoiler Plugin, i can post again.
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 3:06pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/7 "2017-08-04T15:06:53Z")
> [@Michael\_Furtenbach](#):
>
> After the Update of the Spoiler Plugin, i can post again.
Okay, then you had a different issue. My plugins are all up to date.
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 3:47pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/10 "2017-08-04T15:47:18Z")
> [@saluzi](#):
>
> After I restart the server, the problem will be solved temporarily.
Restarting the server changes nothing for me, so your issue is a different one.
---
### Author:  [@saluzi](https://meta.discourse.org/u/saluzi)
#### Post date: [August 4, 2017, 3:50pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/11 "2017-08-04T15:50:46Z")
Oh, thank you. I delete the question
---
### Author:  [@david](https://meta.discourse.org/u/david)
#### Post date: [August 4, 2017, 3:56pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/12 "2017-08-04T15:56:19Z")
> [@tophee](#):
>
> @David\_Taylor, is it this: Nginx.http.sock bind failed after reboot? Should I delete /var/discourse/shared/standalone/nginx.http.sock? And then what?
Sorry, outside of my area of expertise I’m afraid. It does look like the same error though, so you could give it a try (after taking backups of course)
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 4:05pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/13 "2017-08-04T16:05:58Z")
> [@david](#):
>
> after taking backups of course
Since this is outside of discourse, I’m assuming that would be a backup of the entire server? Or what would you back up?
OK, tried by simply backing up `/var/discourse/shared/standalone/nginx.http.sock` before deleting it. I then restarted the app but to no avail. It’s still `connect() to unix:/var/discourse/shared/standalone/nginx.http.sock failed`
---
### Author:  [@david](https://meta.discourse.org/u/david)
#### Post date: [August 4, 2017, 4:19pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/14 "2017-08-04T16:19:24Z")
In my case I only do built-in discourse backups - I know I can follow the 30-minute install guide and get a new server working very quickly should the current one fail.
If you have something other than the [standard install](https://meta.discourse.org/t/142537?silent=true) you’ll probably want to do more than that.
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 5:20pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/15 "2017-08-04T17:20:41Z")
> [@david](#):
>
> If you have something other than the [standard install](https://meta.discourse.org/t/142537?silent=true) you’ll probably want to do more than that.
I have a [standard install](https://meta.discourse.org/t/142537?silent=true) with an outer NGINX reverse proxy.
> [@tophee](#):
>
> tried by simply backing up /var/discourse/shared/standalone/nginx.http.sock before deleting it. I then restarted the app but to no avail. It’s still connect() to unix:/var/discourse/shared/standalone/nginx.http.sock failed
This is a complete mystery to me. My current reasoning is that since
- my `nginx.http.sock ` has been freshly created when I restarted the container,
- I am getting a `no such file or directory` error even though `nginx.http.sock ` exists,
- the draft of my post is successfully synced across devices, which means that data does get into the container, i.e. the error is specific to creating a post,
the source of the problem must be inside the container. This also makes sensd because I didn’t make any changes apart from upgrading and rebuilding.
Maybe I should try ` ./launcher cleanup`? Or: how do I check the logs of the internal nginx?
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 9:35pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/16 "2017-08-04T21:35:06Z")
> [@tophee](#):
>
> Maybe I should try ` ./launcher cleanup`?
That did nothing either.
I have now changed my setup from unix socket to tcp/ip but I still get error 500 when trying to post. At least we know now that the issue is not with the socket binding.
UPDATE: I noticed that after submitting the post (and clicking OK on the error 500 modal) the post is shown in grey on the actual forum page? Does this mean the text gets transmitted to the server or is this preliminary display of the post done in the browser only?
---
### Author:  [@tgxworld](https://meta.discourse.org/u/tgxworld)
#### Post date: [August 4, 2017, 10:26pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/17 "2017-08-04T22:26:03Z")
If it is a 500 error, you can look through `/logs` for the exact error.
To fix the Javascript errors, @david is right ⬇
> [@david](#):
>
> You could try uninstalling it completely.
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 4, 2017, 11:11pm UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/18 "2017-08-04T23:11:43Z")
I uninstalled the doi-resolver plugin completely: no change
As for the logs: everything is pointing to `pretty-text/engines/discourse-markdown/bbcode` as the source of errors. For example:
```
Job exception: Error: Could not find module `pretty-text/engines/discourse-markdown/bbcode` imported from `lib/discourse-markdown/formatting_bbcode`
```
Backtrace:
```
JavaScript at requireFrom (:128:13)
JavaScript at reify (:106:22)
JavaScript at mod.state (:163:17)
JavaScript at tryFinally (:30:14)
JavaScript at require (:162:5)
JavaScript at :262:22
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:256:in `timeout'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:175:in `block in eval'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:68:in `block in with_lock'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:68:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:68:in `with_lock'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:173:in `eval'
/var/www/discourse/lib/pretty_text.rb:189:in `block in markdown'
/var/www/discourse/lib/pretty_text.rb:390:in `block in protect'
/var/www/discourse/lib/pretty_text.rb:389:in `synchronize'
/var/www/discourse/lib/pretty_text.rb:389:in `protect'
/var/www/discourse/lib/pretty_text.rb:137:in `markdown'
/var/www/discourse/lib/pretty_text.rb:236:in `cook'
/var/www/discourse/lib/email/renderer.rb:23:in `html'
/var/www/discourse/lib/email/sender.rb:50:in `block in send'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mail-2.6.6/lib/mail/message.rb:133:in `instance_eval'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mail-2.6.6/lib/mail/message.rb:133:in `initialize'
/var/www/discourse/lib/email/sender.rb:48:in `new'
/var/www/discourse/lib/email/sender.rb:48:in `send'
/var/www/discourse/app/jobs/regular/user_email.rb:41:in `execute'
/var/www/discourse/app/jobs/regular/critical_user_email.rb:10:in `execute'
/var/www/discourse/app/jobs/base.rb:153:in `block (2 levels) in perform'
```
Or this one:
```
MiniRacer::RuntimeError (Error: Could not find module `pretty-text/engines/discourse-markdown/bbcode` imported from `lib/discourse-markdown/formatting_bbcode`)
JavaScript at requireFrom (:128:13)
```
Backtrace
```
JavaScript at requireFrom (:128:13)
JavaScript at reify (:106:22)
JavaScript at mod.state (:163:17)
JavaScript at tryFinally (:30:14)
JavaScript at require (:162:5)
JavaScript at :262:22
JavaScript at Array.forEach ()
JavaScript at setup (:260:36)
JavaScript at buildOptions (:100:36)
JavaScript at :15:17
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:176:in `eval_unsafe'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:176:in `block (2 levels) in eval'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:256:in `timeout'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:175:in `block in eval'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:68:in `block in with_lock'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:68:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:68:in `with_lock'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/mini_racer-0.1.11/lib/mini_racer.rb:173:in `eval'
/var/www/discourse/lib/pretty_text.rb:189:in `block in markdown'
/var/www/discourse/lib/pretty_text.rb:390:in `block in protect'
/var/www/discourse/lib/pretty_text.rb:389:in `synchronize'
/var/www/discourse/lib/pretty_text.rb:389:in `protect'
/var/www/discourse/lib/pretty_text.rb:137:in `markdown'
/var/www/discourse/lib/pretty_text.rb:236:in `cook'
/var/www/discourse/plugins/poll/plugin.rb:148:in `extract'
/var/www/discourse/plugins/poll/lib/polls_validator.rb:10:in `validate_polls'
/var/www/discourse/plugins/poll/plugin.rb:322:in `block (2 levels) in activate!'
/var/www/discourse/lib/new_post_manager.rb:151:in `block in perform'
/var/www/discourse/lib/new_post_manager.rb:150:in `any?'
/var/www/discourse/lib/new_post_manager.rb:150:in `perform'
/var/www/discourse/app/controllers/posts_controller.rb:151:in `create'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/abstract_controller/base.rb:198:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/rendering.rb:10:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/abstract_controller/callbacks.rb:20:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:117:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:505:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:92:in ` __run_callbacks__'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:778:in `_run_process_action_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:81:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/abstract_controller/callbacks.rb:19:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/rescue.rb:29:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/notifications.rb:164:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/notifications.rb:164:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.9/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/abstract_controller/base.rb:137:in `process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionview-4.2.9/lib/action_view/rendering.rb:30:in `process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-mini-profiler-0.10.5/lib/mini_profiler/profiling_methods.rb:76:in `block in profile_method'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal.rb:196:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_controller/metal.rb:237:in `block in action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/routing/route_set.rb:43:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/journey/router.rb:43:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/journey/router.rb:30:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/journey/router.rb:30:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/routing/route_set.rb:817:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/frame_options.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/builder.rb:63:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/conditionalget.rb:38:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/head.rb:13:in `call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:149:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/params_parser.rb:27:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/flash.rb:260:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/session/abstract/id.rb:225:in `context'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/session/abstract/id.rb:220:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/cookies.rb:560:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.9/lib/active_record/query_cache.rb:36:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:88:in ` __run_callbacks__'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:778:in `_run_call_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.9/lib/active_support/callbacks.rb:81:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/logster-1.2.7/lib/logster/middleware/reporter.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.9/lib/rails/rack/logger.rb:38:in `call_app'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.9/lib/rails/rack/logger.rb:22:in `call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:17:in `call_with_quiet_assets'
/var/www/discourse/config/initializers/100-silence_logger.rb:29:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.9/lib/action_dispatch/middleware/request_id.rb:21:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/methodoverride.rb:22:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/runtime.rb:18:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/sendfile.rb:113:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-mini-profiler-0.10.5/lib/mini_profiler/profiler.rb:171:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/message_bus-2.0.2/lib/message_bus/rack/middleware.rb:62:in `call'
/var/www/discourse/lib/middleware/request_tracker.rb:73:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.9/lib/rails/engine.rb:518:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.9/lib/rails/application.rb:165:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.9/lib/rails/railtie.rb:194:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.9/lib/rails/railtie.rb:194:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/urlmap.rb:66:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/urlmap.rb:50:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.8/lib/rack/urlmap.rb:50:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:606:in `process_client'
/var/www/discourse/lib/scheduler/defer.rb:85:in `process_client'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:702:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:549:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:142:in `start'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.3.0/bin/unicorn:126:in `'
/var/www/discourse/vendor/bundle/ruby/2.3.0/bin/unicorn:22:in `load'
/var/www/discourse/vendor/bundle/ruby/2.3.0/bin/unicorn:22:in `d
```
I also noticed that this is also affecting emails: sidekiq is complaining that emails can no longer be sent. For example, there is a password reset email sitting in the “Retries” table and it has this in the error column:
```
Jobs::HandledExceptionWrapper: Wrapped MiniRacer::RuntimeError: Error: Could not find module `pretty-text/engines/discourse-markdown/bbcode` imported from `lib/discourse-markdown/formatting_bbcode`
```
---
### Author:  [@tophee](https://meta.discourse.org/u/tophee)
#### Post date: [August 5, 2017, 1:55am UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/19 "2017-08-05T01:55:33Z")
It turns out that the [Fomatting Toolbar plugin](https://meta.discourse.org/t/formatting-toolbar/40649) was the perpetrator. Deleting it from the `app.yml` solved the problem. It had been deactivated all along so it was not my first suspect. Also, it is a mystery to me how a deactivated plugin with such limited scope can cause so far reaching difficulties.
I shall be more wary of keeping unused plugins in my `app.yml` In the future.
---
### Author:  [@Falco](https://meta.discourse.org/u/Falco)
#### Post date: [August 5, 2017, 1:57am UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/20 "2017-08-05T01:57:14Z")