databinding not error,but Build failed

[puretsang]

FAILED

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':t1:compileBetaDebugJavaWithJavac'.

  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.

BUILD FAILED