When trying to log in to the server, sometimes a crash occurs

EnergyControl-forge-1.16.5-0.2.1
https://pastebin.com/5SVm8Zi5

faced same issue when exiting settings screen without joining server
you shall check if there is active server connection i guess

i had to build 1.16.5-0.2.4a manually
issue has resolved

Was not able to work last two weeks. I will commit all new 1.16.5 changes and upload to curseforge new build this week.

0.2.4a this problem is not observed