Created by: zhoujingchao
Environment System: macOS: 10.15.7 Binaries: node: 14.11.0 yarn: 1.22.10 npm: 6.14.13 npmPackages: react-dev-utils: 11.0.4
The user-defined ports is invalid, detect-port-alt said the ports were taken and jumped to a high port. But detect-port can work well.