[TYPO3-english] Path /index.php is not a link. How do I fix?

[mario chiari]

Hi

I am trying to maintain a 7.6.24 TYPO3.

If I try to update to 7.6.26 from the install tool, it complains that "Automatic
TYPO3 CMS core update not possible: Folder structure has errors or warnings"

and the error I believe is:

"Path /index.php is not a link

The target /index.php should be a link, but is of type file. This cannot be
fixed automatically. Please investigate."


I am not sure how to fix that.
Thanks Cheers
mario