My journey with "Pause at Height", learned a lot

Hi,

The printer did pause at requested layer height but nozzle didn’t raise. then i got a bunch of errors in the console (Unknown command:“PAUSE_RESUME]”, Unknown command:“M300” and Unknown command:“M226”). Then the head moved to requested park position, and after changing filament, when i hit the resume button, i had another error (“Printer not homed”) preventing printing to resume. Any idea ?