If you see errors, check with your registrar to make that sure your site is correctly set up and that your server is connected to the Internet. The graph shows when your server was unresponsive or did not provide a full response for a URL during a crawl. See Server errors to learn about fixing these errors.

In the context of Google Search Console, URL parameters refer to the variables that are appended to a URL to modify its behavior or content. They can help search engines understand and navigate your site, but it's important to manage them properly to avoid potential issues.

Crawling is the process of finding new or updated pages to add to Google (Google crawled my website). One of the Google crawling engines crawls (requests) the page. The terms "crawl" and "index" are often used interchangeably, although they are different (but closely related) actions. Learn more.