Setting up libapache2-svn (1.6.12dfsg-4ubuntu5) ...
Considering dependency dav for dav_svn:
ERROR: Module dav does not exist!
ERROR: Could not enable dependency dav for dav_svn, aborting
dpkg: error processing libapache2-svn (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 libapache2-svn
E: Sub-process /usr/bin/dpkg returned an error code (1)