Worlds Do Not Load,At All

Issue description

I just updated to 2020.4 and opened my workspace. I regenerated code, fixed mob spawning, and ran the game. Every new world never got past 96% and old worlds just crashed. What is the issue. I do not know how to get the crash log since I am forcing it to crash myself. Can someone help? Thanks.

Issue comments

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When possible, attach your MCreator workspace (preferably a minimal example workspace required to reproduce the bug; use File -> Export workspace to a shareable ZIP...), game or build logs (full logs, do not crop them, in text format, screenshots of logs are not acceptable) from the Console tab or terminal and steps to reproduce the bug in your workspace. If logs are long, use service such as Pastebin to host the log and provide the link to the log from the ticket. Please specify which mod elements to check in your workspace too, if applicable.

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