Ionic cordova build fail

Cordova android build keeps failing on ionic 5 project running angular 12.

i get this error from the terminal


FAILURE: Build failed with an exception.

* What went wrong:
java.net.BindException: Address already in use: Cannot bind

[ERROR] An error occurred while running subprocess cordova.

    cordova.cmd build android --emulator exited with exit code 1.

any help, please