well, i started my server before and it worked correctly, tonight i wanted to upgrade LT to latest. i download latest release for 1.12.2 from curseforge and install it. LittleTiles DOESN'T even create a config (i removed old configs of LT) - instead it just crashed...
crash-2021-08-04_00.30.21-server.txt
latest.log

@CreativeMD seems like to me, that LittleTiles try to load RenderingThread class on server-side

its happening to me too can you explain how to fix the problem

its happening to me too can you explain how to fix the problem

excuse me but if you asked me about this, instead, you should ask the mod author =) forgive my misunderstanding
'cause i just stop my server

Fixed in the newest version. Please don't forget to update CreativeCore as well. Thanks for reporting this issue!

Thanks for reporting this issue!

welcome ;)