Replace empty `.then()` with `.catch()` and error logging

### Describe the chore

We have many empty `.then()`'s all around the place. We did this to satisfy our linter but we should use `.catch()` with error logging instead because an empty `.then()` omits every error that might be thrown.

- [ ] Disallow empty `.then()` via the linter
- [ ] Replace empty `.then()` with `.catch()` and error logging