i can't run my proget for some resen (i have internet)

i tryed evrything, i don't get it, i open anather progetked and it work normaly, what's goin on?
the mod has the pluged in gecolib
here the code: (pls someone help)

> Task :compileJava

^
symbol: class AgeableMob
location: class BellallayEntity
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
100 errors
only showing the first 100 errors, of 3569 total; use -Xmaxerrs if you would like to see more
> Task :compileJava FAILED
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.
> Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 6s