问题
I have installed Tomcat three times. but this error still occurs.
Error message : 'Starting Tomcat v9.0 Server at localhost' has encountered a problem. The server cannot be started because one or more of the ports are invalid. Open the server editor and correct the invalid ports.
I need help how to solve it.
来源：https://stackoverflow.com/questions/59428082/how-to-solve-this-tomcat-and-eclipse