(Since the vast majority of skins import into Unity just fine I'm gonna assume this is a LibSWBF2 issue)
Sarlacc tentacle is not properly skinned. The screenshot was taken while it was in the middle of a grab animation. The unmunger does not properly extract this skin, failing in the same way. This and the AT-TE in #28 are both models in BF1, so maybe that's where to start...

(Since the vast majority of skins import into Unity just fine I'm gonna assume this is a LibSWBF2 issue)
Sarlacc tentacle is not properly skinned. The screenshot was taken while it was in the middle of a
grabanimation. The unmunger does not properly extract this skin, failing in the same way. This and the AT-TE in #28 are both models in BF1, so maybe that's where to start...