java.lang.NoClassDefFoundError: net/minecraftforge/fml/common/ICrashCallable

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net/minecraftforge/fml/common/ICrashCallable
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java.lang.NoClassDefFoundError: net/minecraftforge/fml/common/ICrashCallable
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)

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