Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/a4884831745d713169dc2ec94b3625eddf54b09c/board/maxbcm You should set ROOT_URL correctly, otherwise the web may not work correctly.

upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support

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Kconfig	…
MAINTAINERS	…
Makefile	…
kwbimage.cfg	…
maxbcm.c	…