Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/4a20df395d9b6961a4877852e911cbbadd019d40/include/jffs2 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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compr_rubin.h	…
jffs2.h	…
jffs2_1pass.h	…
load_kernel.h	…
mini_inflate.h	…