Error when pushing a predefined charging rule to a subscriber in PCRF

[ashokhs77]

Getting the following error on the apiservices console when I am trying to push a predefined charging rule to a new subscriber:

JSON Data sent: {'imsi': '404200100001501', 'apn_id': 1, 'charging_rule_id': 1}
subscriber_data: {'ue_ambr_dl': 70000000, 'serving_mme_realm': 'localdomain', 'imsi': '404200100001501', 'ue_ambr_ul': 20000000, 'serving_mme_peer': None, 'subscriber_id': 1, 'nam': 0, 'last_modified': '2025-03-03T10:19:32Z', 'enabled': True, 'roaming_enabled': True, 'auc_id': 1, 'roaming_rule_list': None, 'default_apn': 1, 'subscribed_rau_tau_timer': 300, 'apn_list': '1', 'serving_mme': 'mme.localdomain', 'msisdn': '00000001', 'serving_mme_timestamp': None}
[2025-03-03 15:57:46,493] ERROR in app: Exception on /pcrf/ [PUT]
Traceback (most recent call last):
File "/home/user/.local/lib/python3.10/site-packages/flask/app.py", line 1823, in full_dispatch_request
rv = self.dispatch_request()
File "/home/user/.local/lib/python3.10/site-packages/flask/app.py", line 1799, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
File "/home/user/.local/lib/python3.10/site-packages/flask_restx/api.py", line 404, in wrapper
resp = resource(*args, **kwargs)
File "/home/user/.local/lib/python3.10/site-packages/flask/views.py", line 107, in view
return current_app.ensure_sync(self.dispatch_request)(**kwargs)
File "/home/user/.local/lib/python3.10/site-packages/flask_restx/resource.py", line 46, in dispatch_request
resp = meth(*args, **kwargs)
File "/home/user/pyHSS/pyhss-1.0.2/services/apiService.py", line 1687, in put
servingApn = databaseClient.Get_Serving_APN(subscriber_id=subscriber_data['subscriber_id'], apn_id=json_data['apn_id'])
File "/home/user/pyHSS/pyhss-1.0.2/lib/database.py", line 2013, in Get_Serving_APN
result = result.dict
AttributeError: 'NoneType' object has no attribute 'dict'
10.2.105.41 - - [03/Mar/2025 15:57:46] "PUT /pcrf/ HTTP/1.1" 500 -

On the Web GUI, its saying "internal server error" and returning failure.

Tried both tag 1.0.2 code and the master revision. Both the have the same issue..

Anyone else seen this issue or have overcome this issue?