First of all I love these printers. I have 1 P1P and 2 x1c printers and i have had very few problems with them.
A few days ago I had the P1P speghetti on me a third of the way into the print. Thats fine I moved on. Since then tho the printer will print the first 10 or so layers and stop eextruding filament. At first I thought it was a clog, but ruled that out.
Assuming you are using PLA, here is a list:
selection of the wrong plate in the slicer,
the room environment is drafty and or cold,
printing in higher speed than the standard slicer selected setting,
your are partially plugged shown by no extrusion of filament,
you haven’t been cleaning the bed with isopropyl alcohol.
could it be that the filament spool is tangled? i had it a couple of times with eSUN filament. the string was cramped so hard that it could not feed it into the extruder. it was not knotted, but just stuck between the other filament windings