BlockBench created java model giving me a symbol error when used in mcreator 2020.3

I built a humanoid figure in BlockBench and tried to uses it for a entity in mcreator and its says it could not compile because of a missing symbol in the model file.

Error message in compiler:

Executing Gradle task: build
Build info: MCreator 2020.3.22116, forge-1.14.4, 64-bit, 12261 MB, Windows 10, JVM 1.8.0_252, JAVA_HOME: C:\Program Files\Pylo\MCreator\jdk
> Configure project :
New Dep: net.minecraftforge:forge:1.14.4-28.2.16_mapped_snapshot_20190719-1.14.3
> Task :compileJava
C:\Users\Joshua\MCreatorWorkspaces\fishmonger\src\main\java\net\mcreator\fishmonger\entity\SeaWalkerEntity.java:230: error: cannot find symbol public void render(MatrixStack matrixStack, IVertexBuilder buffer, int packedLight, int packedOverlay, float red, float green, float blue,
^
symbol: class MatrixStack
location: class Modelseawalker
C:\Users\Joshua\MCreatorWorkspaces\fishmonger\src\main\java\net\mcreator\fishmonger\entity\SeaWalkerEntity.java:230: error: cannot find symbol public void render(MatrixStack matrixStack, IVertexBuilder buffer, int packedLight, int packedOverlay, float red, float green, float blue,
^
symbol: class IVertexBuilder
location: class Modelseawalker
2 errors
> 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 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 15s
1 actionable task: 1 executed
BUILD FAILED
Task completed in 18039 milliseconds
Code of errored sections:

		@Override
		public void render(MatrixStack matrixStack, IVertexBuilder buffer, int packedLight, int packedOverlay, float red, float green, float blue,
				float alpha) {
			head.render(matrixStack, buffer, packedLight, packedOverlay);
			body.render(matrixStack, buffer, packedLight, packedOverlay);
			leftArm.render(matrixStack, buffer, packedLight, packedOverlay);
			rightArm.render(matrixStack, buffer, packedLight, packedOverlay);
			leftLeg.render(matrixStack, buffer, packedLight, packedOverlay);
			rightLeg.render(matrixStack, buffer, packedLight, packedOverlay);
		}

Any help would be appreciated. Thanks!