Activating Ocean Extra Creating Error 500

I have the same problem as closed topic – when activating Ocean Extra i got Error 500, although it seems site itself is working fine.
I see error at google chrome console and google ads/searchconsole warnings. So it shock my serp.

Site has memory limit 400M, php 7.4, OceanWP 1.9.0, ocean extra 1.6.6.

I deactivated all other plugins and its surely got 500 with activating Ocean Extra only.

Is there another solution to get rid of this error besides “memory limit over 256M” ?