I have an error and I don't know how to fix it

Here is log:

Executing Gradle task: build
Build info: MCreator 2021.2.35315, forge-1.16.5, 64-bit, 8113 MB, Windows 10, JVM 11.0.11, JAVA_HOME: C:\Program Files\Pylo\MCreator\jdk
> Task :compileJava
C:\Users\Giau\Desktop\kasmore\src\main\java\mortal\kasmore\entity\NazerEntity.java:103: error: mortal.kasmore.entity.NazerEntity.CustomEntity is not abstract and does not override abstract method func_241840_a(net.minecraft.world.server.ServerWorld,net.minecraft.entity.AgeableEntity) in net.minecraft.entity.AgeableEntity public static class CustomEntity extends TameableEntity {
   ^
1 error
> 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
Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.
You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.
See https://docs.gradle.org/7.1.1/userguide/command_line_interface.html#sec…
BUILD FAILED in 12s
1 actionable task: 1 executed
BUILD FAILED
Task completed in 40 seconds