Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/blame/commit/09a54c009e8ffbcb88d4b5593b8da32596f14be0/configs/MPC8572DS_defconfig
You should set ROOT_URL correctly, otherwise the web may not work correctly.