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:decompileMc

Error occurred during initialization of VM

Could not reserve enough space for 3145728KB object heap

:decompileMc Failed

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':decompMc'.

> Process 'command 'C:\Program Files\Java\jdk1.8.0_172\bin\java.exe'' finished with non-zero exit value 1

$ gradlew setupDecompWorkspace 빌드 중에 이렇게 에러가 났는데 어떻게 해결해야 하는 지 아시는 분~