Multiple viewport <meta> tags were found in <head>
Pages contain multiple viewport <meta> tags in the <head>. Page should contain only viewport tag. If it will contain more than one viewport this could lead to the wrong one being selected, which may cause rendering issues on mobile devices.
How to fix the issue
Delete the duplicates and leave only one viewport meta tag. Google recommends to use the following properties in viewport tag:
<meta name=”viewport” content=”width=device-width, initial-scale=1″>