Mcreator nether poblem

error: cannot find symbol
        this.netherCaveGenerator.generate(this, this.worldObj, x, z, chunkprimer);
                                ^
  symbol:   method generate(ChunkProviderModded,World,int,int,ChunkPrimer)
  location: variable netherCaveGenerator of type MapGenBase
1 error
:compileJava FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution faiTotal time: 12.348 secs
led for task ':compileJava'.
BUILD FAILED
> Compilation failed; see the compiler error outRun with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
put for details.

pls help