Problem with my custom model (duplicate)

HELP ME

public void render(MatrixStack matrixStack, IVertexBuilder buffer, int packedLight, int packedOverlay, float red, float green, float blue, 
                                                  ^ 
  symbol:   class IVertexBuilder 
  location: class Modelcustom_model 
2 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. 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 5.0. 
Use '--warning-mode all' to show the individual deprecation warnings. 
See https://docs.gradle.org/4.9/userguide/command_line_interface.html#sec:c…;
BUILD FAILED in 1s 
1 actionable task: 1 executed 
BUILD FAILED 
Task completed in 5119 milliseconds