Run a few days ago vscode can run the HTML source code, but I don't know what's going on these two days live server suddenly run up, can't jump to the browser, shows the server is started at the port: 5050, look up some methods (see the port number didn't also occupied, is in the folder to open, not heavy), and I don't know how to the whole, do you have any elder brother know how to run the live server, could you please help me, thank you,