Symptom
An onpage analysis fails with the following error:
Error start URL
the site uses Shopware
If the page is accessed with the user agent XoviOnpageCrawler, a 403 status code is returned from the server:
~]$ curl -I -A "Mozilla/5.0 (compatible; XoviOnpageCrawler; +http://www.xovi.de/)" https://www.example.tld
HTTP/1.1 403 Forbidden
Cause
In conjunction with plugins, Shopware can prevent the XOVIOnpageCrawler user agent from accessing the page.
Solution
Make sure that requests from the XoviOnpageCrawler user agent are answered like those from a normal browser.
Further information
Further information can be found in the Shopware discussion forum at the following link:
https://forum.shopware.com/discussion/33072/hilfe-seo-indexierung-fehler-503-error