Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/4166ba3b2351aa72c372f66a54e9fb92cffbd230/include/asm-offsets.h
You should set ROOT_URL correctly, otherwise the web may not work correctly.