May cause problems port occupied by the program is running, the following is the solution:
0) Open dos window and execute the command netstat -ano, you can view all processes, find the PID conflicts port,
Then go to the task manager (ctrl + shift + esc) to locate the PID program and end the process
1) Open the dos window and execute the netstat -aon | findstr "8080" command, you can view the PID specified port