Can't start tomcatv9.0 in Eclipse

Question

Server OverviewI am getting an error while trying to start tomcat from eclipse. The error message shows.

The server cannot be started because one or more of the ports are invalid. Open the server editor and correct the invalid ports.

what I have done is installed tomcat v9.0 and eclipse oxygen and connected tomcat with eclipse.

Windows 7 - 32 bit
Eclipse Oxygen
Tomcat v9.0

Please help me!

The error message is...

error message

I followed an udemy course "Spring & Hibernate for Beginners"

Answer 1

The admin port is set to '-' which is not correct. Set it e.g. to 8005 or some other free port.