Invalid RAM allocation detected! - problems with MCreator

Hello. When i try to make a new workspace or I try to join to an old workplace I can't start modding, because its says "Invalid Ram allocation detected" I need help please.

MCreator setup failed!
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MCreator setup failed!
The setup of MCreator failed. Based on the suggestions you got, try to fix any errors you have and run it again.
t will try to setup itself again. If you don't manage to fix the problem, open a support ticket on

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https://mcreator.net /tracker and we will try to help you out. Make sure to include error log!
If the error is fixable by you (internet connection problems,
...), you can fix the problem and click the first button
after you fix the problem. MCreator will run the setup again automatically. You choose to copy the error log to
help you if you don't manage to fix the problem. You can just close the
the clipboard and send it to us so we can
MCreator and run it again when you think you have fixed the problem.