Ive Installed openproject on a Debian 9 system. Now when i try to access any projects working packages, Calendar or when i try to upload documents in the budget section with any account, i get the error

'Your view is erroneous and could not be processed.

• You did not provide the correct credentials.'

Ive looked at /var/log/openproject for the production.log, but its not created.

I dont know if it is related,though during the Instalation, i had to rewrite /usr/share/openproject/installer/addons/repositories/bin/preinstall:

if apt-cache show "libapache2-mod-svn" &>/dev/null ; then
                               wiz_check_package "libapache2-mod-svn" || apt-get install -y libapache2-mod-svn
                       else
                               # debian 9
                               wiz_check_package "libapache2-mod-svn" || apt-get install -y libapache2-mod-svn
                       fi

since the installer just wouldnt finish for a non found packet "libapache2-svn" even though it should have seen that libapache2-mod-svn is available.