Your ROOT_URL in app.ini is https://bdgit.educoder.net/ but you are visiting http://bdgit.educoder.net/rcore_test/rCore-Tutorial-v3-tests/commits/commit/2fd70b0ff4c95158b7b65c06b38fb3ff06628ba3/os/src/main.rs You should set ROOT_URL correctly, otherwise the web may not work correctly.