Dorukyum

## Summary Closes #1635. ## Information - [ ] This PR fixes an issue. - [x] This PR adds something new (e.g. new method or parameters). - [ ] This...

chore: improve error messages

2

## Summary Closes #1730. ## Information - [ ] This PR fixes an issue. - [ ] This PR adds something new (e.g. new method or parameters). - [ ]...

## Summary The current implementation of `CogMixin.remove_application_command` ignores the fact that commands with IDs (synchronised commands) stay in the list of pending commands. The new implementation takes this into account....