[MC-130134] Minecraft snapshots

I have problem with loading snapshots after 18w11a. Every snapshot after that, when try to launch it says:

'Error: Could not create the Java Virtual Machine.

Error: A fatal exception has occurred. Program will exit.'

After that minecraft crashes , and when i try to start it again i get the same message. I even updated Java (from 7 to 8) but it still doesn't work.

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[0524/081655:INFO:GameCallbacks.cpp(178)] launcher/launcher (main) info Invalid maximum heap size: -Xmx1,G

Check your settings, or even better, start over with a fresh install.

OMG that was the whole problem thanks guys