Unfortunately I have the same problem as above.
I have successfully flashed TWRP 3.1.1.
Everything was fine until flashing Lineageos 14.1 from above link.
TWRP started the flashing procedure, but then stopped soon, throwing an error: could not find Digest file.
As shibaa987 posted above, I flashed x64 TWRP: https://www.needrom.com/download/twrp-15/. This is a previous version, but if it works, no problem with that…
So again I tried flashing Lineageos 14.1 anf´d again the same thing…
X32 TWRP didnt start at all. After a few seconds, the device bootet into stock recovery
Does anyone know what Error 255 means and what about that Digest file???