Is IPC command vmail usable?

Ive been trying to configure the mail password reset trough courierpassd and succeded now the problem is that when I create a new mail account ajenti rewrites the password with the one that is saved in the mail.json archive.

Searching Ive found the ajenti-ipc vmail command but I cannot get it to work, it gives me a 500 Internal Server Error with this error in the ajenti log:

2019-05-29 14:22:42,616 INFO ipc.ipc_application(): IPC: vmail ['apply']
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/gevent/pywsgi.py", line 884, in handle_one_response
self.run_application()
File "/usr/lib/python2.7/dist-packages/gevent/pywsgi.py", line 871, in run_application
self.process_result()
File "/usr/lib/python2.7/dist-packages/gevent/pywsgi.py", line 860, in process_result
for data in self.result:
TypeError: 'NoneType' object is not iterable
{'GATEWAY_INTERFACE': 'CGI/1.1',
'HTTP_ACCEPT_ENCODING': 'identity',
'HTTP_HOST': 'localhost',
'PATH_INFO': 'vmail/YXBwbHk=',
'QUERY_STRING': '',
'REMOTE_ADDR': 'ipc',
'REMOTE_PORT': '0',
'REQUEST_METHOD': 'GET',
'SCRIPT_NAME': '',
'SERVER_NAME': '',
'SERVER_PORT': '',
'SERVER_PROTOCOL': 'HTTP/1.1',
'SERVER_SOFTWARE': 'gevent/1.1 Python/2.7',
'wsgi.errors': ', mode 'w' at 0x7fb6c88051e0>,
'wsgi.input': ,
'wsgi.multiprocess': False,
'wsgi.multithread': False,
'wsgi.run_once': False,
'wsgi.url_scheme': 'http',
'wsgi.version': (1, 0)} failed with TypeError

, but using the command ajenti-ipc v returns me a 200OK status. 

I was messing with the ipc.py file in /var/lib/ajenti/plugins/vh to see if the command vmail exists but is not there and I was trying to see if I could find it in others files to no avail.

So my question is if this command is still usable or not, because I have another installation of ajenti and the command doesn't work in there too.

My Ajenti version is v1.2.23.13 by the way.

Thank you in Advance