As reported by @hashashin in https://github.com/foosel/OctoPrint/issues/2871#issuecomment-436234068:
Hi @foosel, seems like there's a problem with the gcode viewer in this version:
2018-11-06 13:19:26,075 - tornado.access - WARNING - 403 GET /downloads/files/local/honor7A.gcode (2a01:c50e:221e:7d00:90e5:9d8e:5a18:154e) 13.35ms
This happens with any file, reverting to 1.3.9 make it work again.
Salud.
Fixed by the above commit, will be part of 1.3.10rc2
Ah, looks like this is what I was running into. Will confirm with RC2.
1.3.10rc2 was just released.
Glorious! So nice to have the GCode viewer back, thank you!!
Most helpful comment
Fixed by the above commit, will be part of 1.3.10rc2