Android Studio Where is the Compiler Error Output Window

Question

When I "Run" my project in Android Studio, I see the following in the "Messages" window:

Gradle: 
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':play01:compileDebug'.
> 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.

It reads: "Compilation failed; details are available in the compiler error output." What then happened to the "compiler error output"? How can I run with the —stacktrace option, and/or?