• Mod version, MC version and Loader you are using

supplementaries-1.20-2.6.12-fabric + moonlight-1.20-2.8.48-fabric | 1.20.1 FABRIC

• A description of your issue and how to reproduce
  Some areas on server players get this error, previous versions works fine.

• If applicable, add screenshots to help explain your problem.

send latest.log

my player had issue occur after picking up a bastion map

Hey I'm still getting the same issue as OP after the moonlight lib update. forge version, most recent for both. Client log: https://pastebin.com/yNAp1msS

most recent update seemed to have fixed it :)