Looks like you created multiple NinjaAPIs

Hi there, I was playing around a bit with the basic tutorial (it worked perfectly in the beginning) and got this error at some point:

  File "/django/django_aia_backend/django_aia_backend/urls.py", line 31, in <module>
    path('api/', include(api.urls)),
  File "/djangovenv/lib/python3.9/site-packages/ninja/main.py", line 314, in urls
    self._validate()
  File "/djangovenv/lib/python3.9/site-packages/ninja/main.py", line 398, in _validate
    raise ConfigError("\n".join(msg))
ninja.errors.ConfigError: Looks like you created multiple NinjaAPIs
To let ninja distinguish them you need to set either unique version or url_namespace
 - NinjaAPI(..., version='2.0.0')
 - NinjaAPI(..., urls_namespace='otherapi')
Already registered: ['api-1.0.0']

not sure what is the problem here. I only have one instantiation of NinjaAPI. I tried giving it a specific version name but that does not change anything.

To be fair, I played around a bit before, among other things creating a django app called ‘api’ for using standard DRF. I deleted this and every reference to it, but even after starting a brand new django project, the error persists. Does the api instantiation get persisted somewhere in venv? I cannot explain otherwise why this happens.