Google Webmaster Tools is a free service that helps you understand and improve your website's performance in Google Search. However, sometimes the Google Webmaster Tools may render a "cause error: intl is not defined" error when trying to access certain features.
This error can be caused by a number of factors, but the most likely cause is that your website is not properly configured to use the Internationalization feature of Google Webmaster Tools. To fix this, you will need to edit your website's code and add the following line to the <head> section of your website:
<meta name="google-site-verification" content="Your_Site_Verification_Token" />
Replace "Your_Site_Verification_Token" with the verification token that you received from Google when you registered your website with Google Webmaster Tools. Once you have added this line of code, you should be able to access all of the features of Google Webmaster Tools without any errors.