404. That’s an error.
The requested URL /doku.php?id=ble-series&do=diff&rev2%255B0%255D=1548860750&rev2%255B1%255D=1551173211&difftype=sidebyside was not found on this server. That’s all we know.
/doku.php?id=ble-series&do=diff&rev2%255B0%255D=1548860750&rev2%255B1%255D=1551173211&difftype=sidebyside