During the development, I made a couple typos in the block which resulted in Drupal seeing the module as being deleted without having been uninstalled first. When I realized what I had done, I put the typo back in place then did a proper uninstall of the module. I then went back, fixed the typo and re-installed the module. From what I can tell, the bad module was uninstalled properly and the good module was installed properly, but now it takes roughly 40 seconds to load the admin/modules page. The site is pretty much a fresh site, so I could just wipe it and start over, but I would prefer to figure out the issue so if something similar ever happens to a production site I know how to troubleshoot and fix it.
This is what I've tried to do to fix this.
- I've checked every log file I can find, but I don't see errors reported anywhere
- I've checked the key_value table in the database, but I don't see any reference to my module
- I installed the Module Missing Message Fixer module, but it doesn't find anything
- I flushed the caches and run
drush cr
- I ran update.php and rebuild.php
- I even upgraded to Drupal 9 to see if that would fix it
I'd like to fix this, but I have no idea where else to look at this point.
Does anyone have any thought on what the issue might be or suggestions as to where I should look next?