I've been checking with @ivantodorovich an #Odoo issue where we randomly had on some instances an exception saying "AttributeError: 'Request' object has no attribute 'session'" on #Odoo16. In that case the worker is lost and we need to kill it.
I suspect that the docker image we are using were using a theoreticaly supported Werkzeug version of 0.16.1, on Python 3.9 (as per Odoo's requirements.txt).
We upgraded to Python 3.10 and Werkzeug 2.0.3 and hopefully this will solve the issue.