Side note, Android builds take longer than usual during first build due to downloading and setting up Gradle.
Depending on internet connection, and the dev machine, it can take minutes, and possibly end up with errors if process takes too long.
Also, depending when/where build process was cut off it’s possible to end up with corrupt Grade setup; I’ve had to clear the folder and let it repeat the process in time’s past.
Most times you would just keep trying and will eventually build. If your download speed is not fast or stable then it’ll definitely take time.