I am trying to register a user using nestjs . when I tried to register my user I have an error like this. I spend hours to find out what went wrong, but I ca;t found a thing.I really need your help with this one.

This is my error :

CodePudding user response：

As discussed on our Discord, you forgot to add the @Injectable() decorator to your AuthenticaitonService class, which made the DI service not understand that something was supposed to be injected and thus caused the error