flask imported in clients

[rcarpa]

Motivation

Traceback (most recent call last):
  File "/var/home/dchristidis/.local/bin/rucio", line 52, in <module>
    from rucio.rse.protocols.protocol import RSEProtocol
  File "/var/home/dchristidis/.local/lib/python3.10/site-packages/rucio/rse/__init__.py", line 20, in <module>
    from rucio.rse import rsemanager
  File "/var/home/dchristidis/.local/lib/python3.10/site-packages/rucio/rse/rsemanager.py", line 26, in <module>
    from rucio.common.logging import formatted_logger
  File "/var/home/dchristidis/.local/lib/python3.10/site-packages/rucio/common/logging.py", line 25, in <module>
    from flask import has_request_context, request
ModuleNotFoundError: No module named 'flask'