Most Likely Cause and Fix
Your markup is lacking the
href attribute on an
element referred to by the relevant line and column number.
This attribute is required, it must not be omitted.
What This Error Means
There is a defined set of attributes for each HTML element. Some are required for your markup to be considered valid.
You have omitted the required
href attribute on an element
that requires it.
How To Fix It
The specific error message you encountered will refer to a line and column number. This will guide you to the exact point in your markup to which the error relates.
Find the relevant element and add the missing