Your ROOT_URL in app.ini is https://bdgit.educoder.net/ but you are visiting http://bdgit.educoder.net/buaa20231159/Group11/src/commit/ef29c54be270d55e464494b9543e31c6500dc9c6/Student-21373067.py You should set ROOT_URL correctly, otherwise the web may not work correctly.
Group11/Student-21373067.py

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print('My Student_ID is 21373067')