A problem occurred evaluating project ':BigQueryWorkloadTester'. Could not find method compile()

[siddjain]

I get this error trying to compile BigQueryWorkloadTester:

» gradle clean :BigQueryWorkloadTester:build

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/xxx/pontem/BigQueryWorkloadTester/build.gradle' line: 33

* What went wrong:
A problem occurred evaluating project ':BigQueryWorkloadTester'.
> Could not find method compile() for arguments [{group=com.google.api, name=gax-grpc, version=1.37.0}] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

* 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 538ms

How can I fix this? I am just following the instructions