nu met de juiste files toegevoegd

backend/playlist/serializers/user.py

@@ -2,16 +2,6 @@ from django.contrib.auth.models import User
 from rest_framework import serializers
 
 class UserSerializer(serializers.HyperlinkedModelSerializer):
-    # Add explicit reverse lookup to profile
-    profile = serializers.HyperlinkedRelatedField(
-        view_name='api-profile',
-        lookup_field='id',
-        read_only=True
-    )
-
     class Meta:
         model = User
-        fields = ['url', 'id', 'username', 'email', 'profile']
-        extra_kwargs = {
-            'url': {'view_name': 'api-user', 'lookup_field': 'id'}
-        }
+        fields = ['id', 'username', 'email']