when running 'tox' or 'tox -e py37'

[gofurmzq]

Get some error:
143, in exec_module
exec(co, module.dict)
File "/home/gofurmzq/Documents/flask-api-with-jwt/venv/lib/python3.7/site-packages/pytest_flask/plugin.py", line 11, in
from flask import json
File "/home/gofurmzq/Documents/flask-api-with-jwt/venv/lib/python3.7/site-packages/flask/init.py", line 14, in
from jinja2 import escape
File "/home/gofurmzq/Documents/flask-api-with-jwt/venv/lib/python3.7/site-packages/jinja2/init.py", line 6, in
from markupsafe import escape
ModuleNotFoundError: No module named @'markupsafe'
ERROR: InvocationError for command /home/gofurmzq/Documents/flask-api-with-jwt/.tox/py37/bin/pytest (exited with code 1)
_________________ summary __________________
ERROR: py37: commands failed

Thanks you i hope you can suggest the solved issue @a-luna 😅