and it's always like this. how to fix it?

[Wjxfi]

INFO: Compiling Kotlin code
INFO: No Kotlin files are present. Skipping Kotlin compilation.
INFO: Successfully completed KotlinCompiler.
INFO: Compiling Java code
INFO: No java files found. Skipping compilation.
INFO: Successfully completed JavaCompileTask.
INFO: Compiling class files to dex
ERROR: No classes found to compile.
OUTPUT: Failed to compile D8Task code.
INFO: Successfully completed D8Task.

[PranavPurwar]

Can you show the files present in the src folder?