Ls: no such file or directory: Error: No Java files found that extend CordovaActivity

I am getting this error while building apk.

ls: no such file or directory: C:\ionic\RandText\platforms\android\src\kapoor\RT*java.

Error: No Java files found that extend CordovaActivity.

More information pleaseā€¦

For example: The command you are executing, your ionic info output, the complete build output including the error, same command output when you run it with --verbose.