Can not find symbol build error

I am having this problem with some items, any solution :/? i remaked the items 2 times.

C:\Pylo\MCreator180\forge\build\sources\main\java\mod\mcreator\modnamess.java:45: error: cannot find symbol
    mcreator_greyWood mcreator_10 = new mcreator_greyWood();
    ^
  symbol:   class mcreator_greyWood
  location: class modnamess
C:\Pylo\MCreator180\forge\build\sources\main\java\mod\mcreator\modnamess.java:46: error: cannot find symbol
    mcreator_greyLeave mcreator_11 = new mcreator_greyLeave();
    ^
  symbol:   class mcreator_greyLeave
  location: class modnamess
C:\Pylo\MCreator180\forge\build\sources\main\java\mod\mcreator\modnamess.java:47: error: cannot find symbol
    mcreator_greysa mcreator_12 = new mcreator_greysa();
    ^
  symbol:   class mcreator_greysa
  location: class modnamess
3 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.