**Problem:**
There might be an error during the attempt to upload the file to commons so that the user cannot be forwarded to the special page.
The list of errors can be found in {T189570}
**Task:**
Show a warning on an error page on the target wiki with a note on what went wrong.
**New Page:**
{F16700684}
with a link back to the source wiki
**Acceptance Criteria**
[] All problems that can be detected even before hitting the import button immediately lead to that error page
[] Problems that occur after hitting the import button (such as abusefilter rule failures) also lead to that error page
[] The link on the error page points to the source wiki's file location
[] The error messages displayed correspond to the error that occured.
**Update**
* Don't route Mediawiki Core errors to the error page