Fix WordPress AMP Validation Errors

Add AMP Logo to Yoast AMP Settings

• Go to SEO > AMP > Design
• Add a AMP Icon.
  Important: The logo cannot be .svg. It must be .png or .jpg and it must be at least 32px X 32px.

Once you have made the corrections, delete your site cache and then test your pages again in the Google AMP Page Tester