Error with PDF-Export


i have a Problem when i want to Export a site.
I got a pdf-file, but it is not readable.
In my logs i found this:

ERROR:  ' Expected authority at index 8: https://'

Full Error is here Error-Export.txt (12.0 KB)

Somewhere in the rendering is an error, but i know nothing from this.

Thanks for the help

Hi again,
is ist possible to reinstall the hole export prozess? Is it an extention or only files on the servers?
And how do i do this then?