The tab autocompletion is not working anymore. Instead I get the following message:
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.0, Release Date: 2020-01-01 │
│ Using Python 3.8.2. Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
/usr/lib/python3.8/site-packages/jedi/cache.py:111: DeprecationWarning: Deprecated since version 0.16.0. Use get_signatures()[...].params
result = method(self, *args, **kwargs)
