Tomcat 서버포트 충돌
several ports (8004, 8080) required by tomcat v9.0 server at localhost are already in use. the server may already be running in another process, or a system process may be using the port. to start this server you will need to stop the other process or change the port number(s).
✊🏻문제 원인
Tomcat의 기본 포트(8080, 8004)가 이미 사용중이라서 생기는 오류
✨해결방법1
netstat -a -n -o -p tcp
taskill /f /pid 33912
✨해결방법2
포트번호 변경 ex. 8004 -> 8005
java