Looks like drooping to me, I would see if lowering nozzle temp improves/solves this

My best guess is maybe the instance went down

I have seen something similar to this while printing tpu but never with pla

I have heard of silk pla filament jamming but this looks like more of a retraction problem to me

If it’s a jam check to make sure that your nozzle is clear of any debris

If it’s retraction

Either too many retractions happening too quickly breaking the fillament at your extruder

Or

Retraction distance is too far

I just put a Amazon box over my printer, turned on brim, turned off part cooling and put glue stick over the print area! No warping from it! Did a lot of my voron parts like this before I built a proper enclosure!

It doesn’t have to be anything super complicated, it just needs to keep the heat in

Yeah, it comes out real nice and clear with the only downsides being that it sticks to the buildplate like concrete and supports are damn near impossible to remove Had to pull out a rubber mallet to remove a print once

Yeah, mines got a few deep gashes in it from printing g217 lmao