No APUu here, Imagick had no effect.
I didn't get a core dump either so I'm going to keep trying different settings and disabling modules till I track it down.
Me too. Same issue.
Nginx returns a 502 (or 503 if using apache also).
I am trying to get a core dump so that I can use gdb to backtrace, but I think the plesk php-fpm is not compiled with --enable-debug.
Next things I am going to try is manually add script logging to that FPM pool to try and...