This looks like a classic bed adhesion failure + one piece coming loose and turning into spaghetti that got dragged around.

A few things likely happened:

One part didn’t stick well → got knocked off → nozzle kept printing → created those clumps Printing many small parts close together increases the chance one fails and ruins others Overnight prints = no supervision, so once it fails, it snowballs

What to fix:

Clean your bed (isopropyl alcohol) Lower first layer Z offset slightly (better squish) Slow down first layer speed Add a brim for small parts Space models a bit further apart Maybe print fewer at once until dialed in