Seafile PRo 6.3.12 office preview not working

Hi,
I just upgraded our pro server from 6.2.9 to 6.3.12. Everything works so far, except the office preview. I’m on Scientific Linux 7.6, I have a cluster of three servers, one is doing the office preview with libreoffice-5.3.6.1-19.el7.x86_64.
PDF files, pictures, movies, etc. work, but when I try to open a odt or xls file, I’m getting an “Internal error”.
My seahub.log shows many errors like
2019-03-04 19:27:24,498 [WARNING] django.request:152 get_response Not Found: //api2/account/info/
2019-03-04 19:27:32,966 [WARNING] django.request:152 get_response Not Found: //api2/repos/

What’s wrong?

Thanks,
Dirk

I found the error. Now it works :grinning: