The Error

Error:

C:\Pylo\MCreator162\forge\build\sources\main\java\mod\mcreator\mcreator_fireWand.java:158: error: method onItemRightClick(ItemStack,World,EntityPlayer) is already defined in class ItemfireWand
public ItemStack onItemRightClick(ItemStack itemStack, World world, EntityPlayer player) {
                 ^
1 error
:compileJava FAILED
BUILD FAILED
FAILURE: Build failed with an exception.
Total time: 10.498 secs
* 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.
C:\Pylo\MCreator162\forge>
Task completed with return code 0 in 11200 milliseconds

The code i got for the fireballs is cyberrocky:
https://mcreator.pylo.co/codes/making-item-shoot-fireballs-right-click