[Django]-Django the request argument must be an instance of django.http.HttpRequest

The reason this fails is because you have two functions that have the same name, so it will call the update_label that you defined in the name.

You can fix this by importing the function with a different name, so:

from custom_label.services.custom_label_svc import update_label as update_label_logic

@api_view(['POST'])
@authorize
def update_label(request) -> JsonResponse:
    try:
        payload = ValidateUpdateLabel(data=request.data)
        if payload.is_valid():
            # call service methods
            data = update_label_logic(payload.validated_data)
    # …

But wrapping the entire logic in a try–except is usually not a good idea. Furhtermore your function is vulnerable to SQL injection.