after buy pro package it's showing this error :
TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'
REQUEST_DATE: 2025-01-29 11:05:44
PAN_VERSION: 7.0.15
OS_VERSION: CentOS 7.9.2009 x86_64(Py3.12.3)
REMOTE_ADDR: 92.99.105.118
REQUEST_URI: POST /v2/plugin%3Faction%3Da%26amp%3Bname%3Dmail_sys%26amp%3Bs%3Dget_mail_type_info_list
REQUEST_FORM: {'search': '', 'p': '1', 'size': '10'}
USER_AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Traceback (most recent call last):
File "/www/server/panel/class_v2/panel_plugin_v2.py", line 2362, in a
return public.run_plugin_v2(get.name, get.s, get)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/www/server/panel/class/public/common.py", line 8646, in run_plugin_v2
raise PanelError(res['msg'])
public.exceptions.PanelError: An error occurred while the panel was running: Traceback (most recent call last):
File "/www/server/panel/plugin/mail_sys/mail_sys_main.py", line 5793, in get_mail_type_info_list
url = SendMailBulk().get_unsubscribe_url()
^^^^^^^^^^^^^^
File "/www/server/panel/plugin/mail_sys/mail_send_bulk.py", line 224, in init
32pdC9DD05OE2l0oXazDFKNYCOxCD3X99iCnc+D/HIxkIJFkt9DQpmE4qIEtKoxL
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/www/server/panel/plugin/mail_sys/mail_send_bulk.py", line 2841, in get_yesterday_count
OxNw9j56AjrQ3hh4qxzoqwbxP1nNMoA1VGtBlMgcgIphrchw5J6n5/T69ACFmgkJWw4cAA+WpGBHgPs040p8vw==
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
File "/www/server/panel/plugin/mail_sys/mail_send_bulk.py", line 2855, in upload_yesterday_email_usage
1+QDiKaQ67D+7Wg0+pj/DGGSdlLtBmU3QEwvvdKMRZPuT7fVUdHgvDhsqXqSaU2h
~~~~~~~~~~~~~~~~~~~_~~
File "/www/server/panel/plugin/mail_sys/mail_send_bulk.py", line 2768, in _get_month_senduse
1+QDiKaQ67D+7Wg0+pj/DAoLgECgs6Bd/0S01NS3ABhHVEKcaAXTHg+tg2PdYvNB
^^^^^^^^^^^^^^^
TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'