Howdy, I am very new to modding minecraft and am starting a new world with mods. I have already inserted the 8GB text into the launcher installations thingy, and am using the latest version of forge, and after tirelessly searching for mods that could be causing the issue and deleting them, I still have problems. After removing resource packs (fresh animations and visible ores) the world was able to load for a few more seconds before immediately crashing, giving error code -1 and saying:

"The game crashed whilst accessing legacyrandomsource from multiple threads Error: java.lang.IllegalStateException: Accessing LegacyRandomSource from multiple threads"

Thank you in advance for your help. Here is the pastebin of the crash report for further details: https://pastebin.com/EWECjQgF

Happy Holidays :)

One of your mods is using the random number generator incorrectly.

The error message does not identify which one.

This is what I found when searching github for similar issues: https://github.com/search?q=Accessing+LegacyRandomSource+from+multiple+threads&type=issues

Maybe one of them matches a mod you are using?

After looking through, I found the match to be V-Tweaks. After removing the mod, the game worked properly. Thank you so much for your help!