there seems to be a bug in SoGO. If I use the preview function of SoGO than I get errors showing different pdf-files:
An error occurred during object publishing
Did not find mail method or part-reference!
What I found out is that the filename contains dots inside the filename .
“Zahlungsavis vom 29.09.2021 Kunde 9030011.pdf”
If I change the german date 29.09.2021 in the file name to 29092021 the error is gone.
I think the dots are causing this error. Maybe SoGO needs to “escape” the dots in the filename?