Parse errors are only errors with the syntax of HTML. … For the purposes of conformance checkers, if a resource is determined to be in the HTML syntax, then it is an HTML document.

How do I fix parse error in HTML?

The reason why this error shows up is because you have one or more errors in your custom CSS/LESS CSS. To resolve this error, you’re going to need to review your custom CSS, LESS CSS for any errors such as a missing { , } , ; or even spelling mistakes in your CSS properties.

What is a parse error on website?

When a parse error or syntax error occurs, it means something didn’t occur in the order it was supposed to, and that’s where we get into the second part of this error.