Unable to run ionic app on macOS Catalina which is developed in windows

Check a fresh copy of the source tree out from version control on your Mac and then run npm i inside it. This implicitly means “you didn’t just copy the entire project directory over, did you?”. If you aren’t using version control like git, start right now. Along with making transfering build environments like you are doing now easy, it is going to save you a lot of headache on many fronts.