Please help with "bird's nest" -like print failure

[JoshBurner]

Hello all, first-time post here. I've printed dozens of PLA prints on my Prusa Mini+, and encountered a new type of failure today. The print had done several layers successfully before I left it for the night, but when I came in this morning I found that it had failed in a way that I haven't seen before. The layers got very thin and wispy at some point and were not adhering completely to each other. I think this may be what I've read about people calling "under-extrusion"? Is that true? What might some possible causes be, and steps that I could take to remedy them? When I tried to print again today, this failure behavior was evident even in the first layer.Thanks in advance!P.S. - my print temperature was set to 220 C. The filament's recommended temperature is 195C to 220C. The printer's stock temperature was 215C, but I bumped that up to 220C when the printer started occasionally clogging at the nozzle a while ago.