Help with my code, it says tag must be paired , no start tag

javascript codehttps://mygradr.web.app/Yr1PBHnkUVmaAagGwPZb/!#playgroundhttps://mygradr.web.app/Yr1PBHnkUVmaAagGwPZb/!#playground

that’s just a link to the application, not your code
it is impossible to help you like this, we don’t know your code, nor what you need to do, nor what’s wrong