TYPO3 Core

If fetching of an error page, e.g. the 404 page, fails, there is only a misleading error message:
Error handler could not fetch error page: Possible recursion detected.

This can for example happen, if you have a self signed SSL certificate in your local development environment and your site configuration defines a TYPO3 page as content source like this:

errorHandling:
  -
    errorCode: '404'
    errorHandler: Page
    errorContentSource: 't3://page?uid=10'

When fetching the content of the specified error page fails due to the self signed SSL certificate the above mentioned error message is misleading.

Another question is, if it is fine that error pages won't work in local development environments with self signed certificates.