Android studio module problem

Because of the red J , the project cannot be compiled
after deleting the module in File->Project Structure . build.gradle is not in the root directory! Compile (elephant icon) 4. "Your project path contains non-ASCII characters." appears, the reason is that the copied project has the Chinese character "copy", just delete and recompile 5. File->invalidate and restart 6 . Click build, if "Unsupported Modules Detected: Compilation is not supported for following modules: testfacepass." appears, delete the .idea file 7. Restart again 8. Red J solves the problem