please check this https://github.com/pallets/flask/issues/4494 it may be be good to add these to requirement.txt Jinja2==3.0.3 werkzeug==2.0.2
please check this pallets/flask#4494
it may be be good to add these to requirement.txt
Jinja2==3.0.3
werkzeug==2.0.2