The pattern of ridges on end of the filament looks odd. If you zoom in on the filament in the last picture, it looks like the feeder is having trouble pushing the filament, which causes the feeding wheel to grind the filament. At least to me, that doesn’t look like a healthy feeder gripping pattern.
I see that your filament looks normal at the top of the frame, then looks like it’s stretched out inconsistently near the ribbon cable, then has that ridged pattern below. Is this normal clear PLA, or something special? I know the snapmaker has trouble with some of the flexible filaments, but that’s usually a problem with them flexing while being pushed. Your filament looks like it’s been stretched out. Although that could be a heating problem too. Did you have to release this filament to get this picture, or just pull it up and out of the print head?
Were you been watching when the problem happened? I’m wondering if maybe your filament is binding up, and the feeding mechanism can’t pull enough to do a proper extrusion. The texture on the top of your second picture looks like some material is extruding, in a few places, but not nearly enough.
I had a problem when my filament was mounted on the back of the Z axis (the suggested location). When the filament was getting close to the end of the spool, it would bind, and the feed mechanism wasn’t able to pull in enough filament. I eventually fixed it by mounting the filament on top of the Z axis using the YASTH, but there are other filament guides that should work.