django intermediate model with no foreign key error

Building some complex models for my django app and got some help here: Using ManyToMany through correctly for complex model in django To which the result was getting this far here: ipaswdb.ProviderLocations: (fields.E336) The model is used as an intermediate model by 'ipaswdb.Group.providers', but it does not have a foreign key to 'Group' or 'Provider'. I mean yes the error is i n english but I do not know what it is really trying to tell me. Full models below, but the idea was to have A group having many locations. A provider belonging to a group via whichever location(s) they work at, secondly a provider can belong to many groups at many locations Provider A -> location 1 -> location 2 -> location 3 Group 1 -> has a location 1 -> has a location 2 Group 2 -> has a location 3 -> has a location 4 Provider A belongs to group 1 and 2 via locations 1,2,3 My full models are: class Group(models.Model): group_name = models.CharField(max_length=50) created_at=models.DateField(auto_now_add=True) updated_at=models.DateField(auto_now=True) providers = models.ManyToManyField('Provider', through='ProviderLocations') class Provider(models.Model): first_name = models.CharField(max_length = 50) created_at=models.DateField(auto_now_add=True) updated_at=models.DateField(auto_now=True) class ProviderLocations(models.Model): provider = models.ForeignKey('Provider', on_delete=models.CASCADE) group_location = models.ForeignKey('GroupLocations', on_delete=models.CASCADE) created_at=models.DateField(auto_now_add=True) updated_at=models.DateField(auto_now=True) class GroupLocations(models.Model): address = models.ForeignKey('Address', on_delete= models.SET_NULL, null=True) group = models.ForeignKey('Group', on_delete=models.SET_NULL, null=True) doing_business_as = models.CharField(max_length = 255) created_at=models.DateField(auto_now_add=True) updated_at=models.DateField(auto_now=True) I tried an edit on the ProviderLocations too with no results: class ProviderLocations(models.Model): provider = models.ForeignKey('Provider', on_delete=models.CASCADE) group = models.ManyToManyField('Group', through='GroupLocations') created_at=models.DateField(auto_now_add=True) updated_at=models.DateField(auto_now=True)