Upgrading from 2 to 3, omv-release-upgrade aborts with the following error. Any idea on how to proceed?
Errors were encountered while processing:
postfix
bsd-mailx
sh: 1: .: Can't open /usr/share/openmediavault/scripts/helper-functions
E: Problem executing scripts DPkg::Post-Invoke '. /etc/default/openmediavault; . /usr/share/openmediavault/scripts/helper-functions; if omv_checkyesno ${OMV_DPKG_POSTINVOKE_PURGE_MAN}; then if [ $(ps w -p $PPID | grep -c remove) != 1 ]; then echo 'Purging man pages ...'; rm -rf /usr/share/doc/* /usr/share/man/* /var/cache/man/*; else exit 0; fi; fi'
E: Sub-process returned an error code
E: Sub-process /usr/bin/dpkg returned an error code (1)