Recently I restart the server and aapanel isnt accessible, websites are OK but I cant login or access aapanel.
I use Nginx.
I try run bt 16 ( fix ) - not work
I see entrance security and its OK, 
In bt 22 ( display error log ):
[2023-04-20 09:52:24,399][ERROR] - Exception on /*********/ [GET]
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/flask/app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "/usr/lib/python2.7/site-packages/flask/app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/lib/python2.7/site-packages/flask/app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python2.7/site-packages/flask/app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/lib/python2.7/site-packages/flask/app.py", line 1935, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/www/server/panel/BTPanel/__init__.py", line 1196, in login
data[rsa_key] = public.get_rsa_public_key().replace("\n","")
AttributeError: 'NoneType' object has no attribute 'replace'
