"- Hello I work on this shitty Drupal project where the vendor directory is gitted, and we can't use composer becauses it returns error [note: i wish this was a joke]. So I installed a module that won't work, because it needs a depency. I installed it but it still doesn't work
- You need to edit your autoloader
- Ok, what do I put in it?
- Idk, you're not supposed to do it, and let composer do it for you"

Did I ever tell you how the Drupal stack exchange will one day make me turn into a serial killer?