Seems to be the exact issue we were experiencing in the past:
https://forum.openlitespeed.org/threads/ols-1-6-6-bug.4095/#post-7770
downgrading to 1.6.12 until resolved
https://forum.openlitespeed.org/threads/ols-1-6-6-bug.4095/#post-7770
downgrading to 1.6.12 until resolved