redis.exceptions.DataError at xcessiv launch

[AlexCoul]

Hello,
When I try to launch xcessiv I get an error:

Traceback (most recent call last): File "/PATH_TO/anaconda3/bin/xcessiv", line 10, in <module> sys.exit(main()) File "/PATH_TO/anaconda3/lib/python3.7/site-packages/xcessiv/scripts/runapp.py", line 51, in main redis_conn.get(None) # will throw exception if Redis is unavailable File "/PATH_TO/anaconda3/lib/python3.7/site-packages/redis/client.py", line 1264, in get return self.execute_command('GET', name) File "/PATH_TO/anaconda3/lib/python3.7/site-packages/redis/client.py", line 774, in execute_command connection.send_command(*args) File "/PATH_TO/anaconda3/lib/python3.7/site-packages/redis/connection.py", line 620, in send_command self.send_packed_command(self.pack_command(*args)) File "/PATH_TO/anaconda3/lib/python3.7/site-packages/redis/connection.py", line 663, in pack_command for arg in imap(self.encoder.encode, args): File "/PATH_TO/anaconda3/lib/python3.7/site-packages/redis/connection.py", line 125, in encode "byte, string or number first." % typename) redis.exceptions.DataError: Invalid input of type: 'NoneType'. Convert to a byte, string or number first.

Previously I had to change
from gevent.wsgi import WSGIServer
to
from gevent.pywsgi import WSGIServer
as indicated in this issue

My server is responding when I do redis-cli ping

I am on Ubuntu 18.04, with python 3.7.3 and redis 5.0.5

Do you have an idea to fix this?
Thanks!