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I've tried by changing the IP address and also changed the default browser, but still not working.

CodePudding user response：

Check if you have written a nasty code which blocks some of the function of live server. Just go on element tab in dev tools and scroll down to check the script written after <-- Code Injected by Live Server -->. See whether you have used the same name for any function in your any js file. If so just change their names. If this does not work then try to reinstall live server extension.