Title: AMP Webmaster Tools error
Last modified: November 17, 2016

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# AMP Webmaster Tools error

 *  [jrhenry17](https://wordpress.org/support/users/jrhenry17/)
 * (@jrhenry17)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/amp-webmaster-tools-error/)
 * Hi there,
    Both my website shows the following error in the AMP section of webmaster
   tools. One is showing “Invalid CSS stylesheet” and another site is showing the
   error “Prohibited or invalid use of HTML Tag”
 * Anybody knows how to fix this please?

Viewing 1 replies (of 1 total)

 *  [lenoz](https://wordpress.org/support/users/lenoz/)
 * (@lenoz)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/amp-webmaster-tools-error/#post-8448121)
 * For each error, you can click through on GSC/WT to see the list of pages suffering
   from that error, and then click through on each one to get more details with 
   the error.
 * I haven’t had any stylesheet errors, but have had a couple of invalid HTML tags
   which is almost always a case of the AMP plugin having trouble with typos in 
   the article, e.g.:
 * <h>Whoops</h2>
 * or
 * <strongWhoops again

Viewing 1 replies (of 1 total)

The topic ‘AMP Webmaster Tools error’ is closed to new replies.

 * ![](https://ps.w.org/amp/assets/icon.svg?rev=2527602)
 * [AMP](https://wordpress.org/plugins/amp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/amp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/amp/)
 * [Active Topics](https://wordpress.org/support/plugin/amp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/amp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/amp/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [lenoz](https://wordpress.org/support/users/lenoz/)
 * Last activity: [9 years, 6 months ago](https://wordpress.org/support/topic/amp-webmaster-tools-error/#post-8448121)
 * Status: not resolved