fix: add check if the users need to be imported (#716)

apiserver/plane/bgtasks/importer_task.py

@@ -38,6 +38,8 @@ def service_importer(service, importer_id):
 
         users = importer.data.get("users", [])
 
+        # Check if we need to import users as well
+        if len(users):
             # For all invited users create the uers
             new_users = User.objects.bulk_create(
                 [
@@ -63,7 +65,6 @@ def service_importer(service, importer_id):
                 ]
             )
 
-
             # Add new users to Workspace and project automatically
             WorkspaceMember.objects.bulk_create(
                 [