code: def check(self, **kwargs):
          
          errors = super().check(**kwargs)
          multitenant_staticfiles_dirs = settings.MULTITENANT_STATICFILES_DIRS
  
          if not isinstance(multitenant_staticfiles_dirs, (list, tuple)):
              errors.append(
                  Error(
                      "Your MULTITENANT_STATICFILES_DIRS setting is not a tuple or list.",
                      hint="Perhaps you forgot a trailing comma?",
                  )
              )
  
          return errors
docs: In addition to parent class' checks, also ensure that MULTITENANT_STATICFILES_DIRS
          is a tuple or a list.