child process kill

Hi. I'm a newbie of openlitespeed.
I've a wordpress multisite.
i am trying to transfer it to openlitespeed.
the site work very very fine but i've any problems.

i actually have on aws istance 1gb of ram.

i set external php, at the end the config of my php.

when i star jetpack on wordpress i receive in stderror Child process with pid: 1000 was killed by signal: 9, core dump: 0 and the server restart. How can i resolve this problem? sorry for my english

and on my php config.

Anyone can help me? thanks