Metro Minecraft Hack Error?

i have done a lot of research on why it is saying this when i start up my MineCraft with metro, i have tried to uninstall java and looked it up on google restarted my MineCraft and many other things. This is what it says.

Error: Could not find or load main class net.minecraft.client.main.Main
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be
removed in a future release

Please Help!

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