# 500 internal server error when updating a post by id
**URL:** https://meta.discourse.org/t/500-internal-server-error-when-updating-a-post-by-id/389343
**Category:** Development
**Created:** [November 21, 2025, 3:35pm UTC](https://meta.discourse.org/t/500-internal-server-error-when-updating-a-post-by-id/389343 "2025-11-21T15:35:24Z")
**Posts on this page:** 1
**Showing post:** 1
### Author:  [@nordize](https://meta.discourse.org/u/nordize)
#### Post date: [November 21, 2025, 3:35pm UTC](https://meta.discourse.org/t/500-internal-server-error-when-updating-a-post-by-id/389343/1 "2025-11-21T15:35:24Z")
I did read and followed [Reverse engineer the Discourse API](https://meta.discourse.org/t/reverse-engineer-the-discourse-api/20576), and discovered that the endpoint is actually `/posts/{id}` and not `/posts/{id}.json`, but I did try both.
Discourse running in docker. The following python code gives 500 internal error and I’m a bit stumped. Other read operations work fine (fetching of topics and posts, etc). The api key has global read & write permissions.
Can anyone see what’s wrong? If not, how can I actually debug it?
```python
endpoint = '/posts/6451' # also tried /posts/6451.json
api_url = self.base_url + endpoint
headers = {'Api-Username': 'system', 'Api-Key': self.api_key}
raw = "... long enough and valid markdown here ..."
data = {
"post": {
"raw": raw,
"edit_reason": "API update",
"topic_id": self.topic_id, # also tried commenting this out
"original_text": original_raw, # also tried commenting this out
"locale": "", # also tried commenting this out
}
}
response = requests.put(api_url, headers=headers, data=data, timeout=10)
response.raise_for_status()
```
`/logs` says: `TypeError (no implicit conversion of Symbol into Integer) app/controllers/posts_controller.rb:248:in `’ app/controllers/posts\_controller.rb:248:in `update' app/controllers/application_controller.rb:`
Line 248 in app/controllers/posts\_controller.rb is [here](https://github.com/discourse/discourse/blob/789b66ab0b357552ffed06f79a2f5ac4cc757474/app/controllers/posts_controller.rb#L248) (my local discourse file is identical) which is the line parsing the “raw” string. I can’t see what’s wrong …
(full log below)
```plaintext
app/controllers/posts_controller.rb:248:in `[]'
app/controllers/posts_controller.rb:248:in `update'
actionpack (8.0.2.1) lib/action_controller/metal/basic_implicit_render.rb:8:in `send_action'
actionpack (8.0.2.1) lib/abstract_controller/base.rb:226:in `process_action'
actionpack (8.0.2.1) lib/action_controller/metal/rendering.rb:193:in `process_action'
actionpack (8.0.2.1) lib/abstract_controller/callbacks.rb:261:in `block in process_action'
activesupport (8.0.2.1) lib/active_support/callbacks.rb:120:in `block in run_callbacks'
app/controllers/application_controller.rb:428:in `block in with_resolved_locale'
i18n (1.14.7) lib/i18n.rb:353:in `with_locale'
app/controllers/application_controller.rb:428:in `with_resolved_locale'
activesupport (8.0.2.1) lib/active_support/callbacks.rb:129:in `block in run_callbacks'
activesupport (8.0.2.1) lib/active_support/callbacks.rb:140:in `run_callbacks'
actionpack (8.0.2.1) lib/abstract_controller/callbacks.rb:260:in `process_action'
actionpack (8.0.2.1) lib/action_controller/metal/rescue.rb:27:in `process_action'
actionpack (8.0.2.1) lib/action_controller/metal/instrumentation.rb:76:in `block in process_action'
activesupport (8.0.2.1) lib/active_support/notifications.rb:210:in `block in instrument'
activesupport (8.0.2.1) lib/active_support/notifications/instrumenter.rb:58:in `instrument'
activesupport (8.0.2.1) lib/active_support/notifications.rb:210:in `instrument'
actionpack (8.0.2.1) lib/action_controller/metal/instrumentation.rb:75:in `process_action'
actionpack (8.0.2.1) lib/action_controller/metal/params_wrapper.rb:259:in `process_action'
activerecord (8.0.2.1) lib/active_record/railties/controller_runtime.rb:39:in `process_action'
actionpack (8.0.2.1) lib/abstract_controller/base.rb:163:in `process'
actionview (8.0.2.1) lib/action_view/rendering.rb:40:in `process'
rack-mini-profiler (4.0.1) lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
actionpack (8.0.2.1) lib/action_controller/metal.rb:252:in `dispatch'
actionpack (8.0.2.1) lib/action_controller/metal.rb:335:in `dispatch'
actionpack (8.0.2.1) lib/action_dispatch/routing/route_set.rb:67:in `dispatch'
actionpack (8.0.2.1) lib/action_dispatch/routing/route_set.rb:50:in `serve'
actionpack (8.0.2.1) lib/action_dispatch/journey/router.rb:53:in `block in serve'
actionpack (8.0.2.1) lib/action_dispatch/journey/router.rb:133:in `block in find_routes'
actionpack (8.0.2.1) lib/action_dispatch/journey/router.rb:126:in `each'
actionpack (8.0.2.1) lib/action_dispatch/journey/router.rb:126:in `find_routes'
actionpack (8.0.2.1) lib/action_dispatch/journey/router.rb:34:in `serve'
actionpack (8.0.2.1) lib/action_dispatch/routing/route_set.rb:908:in `call'
lib/middleware/omniauth_bypass_middleware.rb:35:in `call'
rack (2.2.17) lib/rack/tempfile_reaper.rb:15:in `call'
rack (2.2.17) lib/rack/conditional_get.rb:40:in `call'
rack (2.2.17) lib/rack/head.rb:12:in `call'
actionpack (8.0.2.1) lib/action_dispatch/http/permissions_policy.rb:38:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:415:in `call'
lib/middleware/csp_script_nonce_injector.rb:12:in `call'
config/initializers/008-rack-cors.rb:14:in `call'
rack (2.2.17) lib/rack/session/abstract/id.rb:266:in `context'
rack (2.2.17) lib/rack/session/abstract/id.rb:260:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/cookies.rb:706:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/callbacks.rb:31:in `block in call'
activesupport (8.0.2.1) lib/active_support/callbacks.rb:100:in `run_callbacks'
actionpack (8.0.2.1) lib/action_dispatch/middleware/callbacks.rb:30:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:31:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/show_exceptions.rb:32:in `call'
logster (2.20.1) lib/logster/middleware/reporter.rb:40:in `call'
lib/middleware/default_headers.rb:13:in `call'
railties (8.0.2.1) lib/rails/rack/logger.rb:41:in `call_app'
railties (8.0.2.1) lib/rails/rack/logger.rb:29:in `call'
config/initializers/100-quiet_logger.rb:20:in `call'
config/initializers/100-silence_logger.rb:29:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/request_id.rb:34:in `call'
lib/middleware/enforce_hostname.rb:23:in `call'
rack (2.2.17) lib/rack/method_override.rb:24:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/executor.rb:16:in `call'
rack (2.2.17) lib/rack/sendfile.rb:110:in `call'
rack-mini-profiler (4.0.1) lib/mini_profiler.rb:191:in `call'
lib/middleware/processing_request.rb:12:in `call'
message_bus (4.4.1) lib/message_bus/rack/middleware.rb:60:in `call'
lib/middleware/request_tracker.rb:410:in `call'
actionpack (8.0.2.1) lib/action_dispatch/middleware/remote_ip.rb:96:in `call'
railties (8.0.2.1) lib/rails/engine.rb:535:in `call'
railties (8.0.2.1) lib/rails/railtie.rb:226:in `public_send'
railties (8.0.2.1) lib/rails/railtie.rb:226:in `method_missing'
rack (2.2.17) lib/rack/urlmap.rb:74:in `block in call'
rack (2.2.17) lib/rack/urlmap.rb:58:in `each'
rack (2.2.17) lib/rack/urlmap.rb:58:in `call'
unicorn (6.1.0) lib/unicorn/http_server.rb:634:in `process_client'
unicorn (6.1.0) lib/unicorn/http_server.rb:739:in `worker_loop'
unicorn (6.1.0) lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
unicorn (6.1.0) lib/unicorn/http_server.rb:143:in `start'
unicorn (6.1.0) bin/unicorn:128:in `'
vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `'
```
---
_[View the full topic](https://meta.discourse.org/t/500-internal-server-error-when-updating-a-post-by-id/389343)._