whenever I spawn a warped mosco it crashed my server

it only happens when it does one of its attacks

This is also happening to me my world that I have worked so very hard on is now not able to be logged onto all because I tried fighting a warped mosco I do not know what to do please help me fix this issue

Same, it's the latest version of Alex's Mobs with the latest version of Citadel for version 1.20. No other mods. Here's the game log:
New Paste 1 (1).txt

fixed