# Deactivated plugin causes Error 500 on post

**URL:** <https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448>\
**Category:** Product Support\
**Created:** [04.Август.2017 12:40:15 UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448 "2017-08-04T12:40:15Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![tophee](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/tophee/32/73406_2.png) [@tophee](https://meta.discourse.org/u/tophee)\
**Post date:** [04.Август.2017 12:40:16 UTC](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448/1 "2017-08-04T12:40:16Z")

</div>

Since my last discourse upgrade and rebuild I can no longer post anything on my forum:

 ![image](https://global.discourse-cdn.com/meta/original/3X/e/2/e261fb5858929b9c16cd1bedf3a7f22e23b8a832.png)

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 (<anonymous>: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:

 ![image](https://global.discourse-cdn.com/meta/original/3X/2/c/2c97c2eb166182280c18723a4b61663ec5162e17.png)

Any pointers where I should start?

~~UPDATE: I also just noticed that my installed plugins page is not working (no plugins shown):~~

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_[View the full topic](https://meta.discourse.org/t/deactivated-plugin-causes-error-500-on-post/67448)._