Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/f7f601002d26cd5afc2241728a1e4d6106044184/cmd
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Some controllers do not allow the output value to be read. Detect this and
report the error in that case.
Signed-off-by: Simon Glass <sjg@chromium.org>