500 Internal Server Error Server got itself in trouble

[helmarw]

System Health details

Homeassistant Docker on Synology NAS DS1821+
Core 2024.1.2
Frontend 20240104.0

Checklist

• I have enabled debug logging for my installation.
• I have filled out the issue template to the best of my ability.
• This issue only contains 1 issue (if you have multiple issues, open one issue for each issue).
• This issue is not a duplicate issue of currently previous issues..

Describe the issue

after trying to add this integration, thats all im getting: 500 Internal Server Error Server got itself in trouble

no idea where to start. log-file not really helpful. im looking at the files listed but no clue why there si a problem
and idea ?

Reproduction steps

follow installation instructions
it shows up when searching for MediaBrowser but cannot add Integration

Debug logs

2024-07-09 11:43:12.118 WARNING (SyncWorker_1) [homeassistant.loader] We found a custom integration mediabrowser which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
  File "/config/custom_components/mediabrowser/config_flow.py", line 90, in async_step_user
  File "/config/custom_components/mediabrowser/discovery.py", line 22, in discover_mb
  File "/config/custom_components/mediabrowser/discovery.py", line 31, in _discover_message
  File "/config/custom_components/mediabrowser/config_flow.py", line 90, in async_step_user
  File "/config/custom_components/mediabrowser/discovery.py", line 22, in discover_mb
  File "/config/custom_components/mediabrowser/discovery.py", line 31, in _discover_message

Diagnostics dump

No response

[ghost-03]

I don't think this project is maintained, but I had a similar problem, also with Docker on a Synology NAS. What helped is that I modified the 'discovery.py' file in the plugin, and changed the hostname in line 32 from socket.gethostname() to "localhost". After a restart, the plugin worked as expected. Possibly either the NAS or the Docker confused Python. Hope this helps.