Thank you very much for the reply. The Ubuntu repository currently has the 8.6.2 as the installable version. I was able to remove the broken installation by using just the repository.
I was able to get it installed, but had an existing mysql database installed and the default options was to uninstall mysql.
root@nextcloud:~# apt-get install kopano-core
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libcgi-fast-perl libcgi-pm-perl libevent-core-2.1-6 libfcgi-perl libhtml-template-perl mysql-server-core-5.7
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
kopano-backup kopano-common kopano-dagent kopano-gateway kopano-ical kopano-libs kopano-monitor kopano-search kopano-server kopano-spooler kopano-utils mariadb-client-10.1 mariadb-client-core-10.1
php-mapi python-kopano python-mapi
Suggested packages:
kopano-webapp
Recommended packages:
mariadb-server | default-mysql-server
The following packages will be REMOVED:
mysql-client-5.7 mysql-client-core-5.7 mysql-server mysql-server-5.7
The following NEW packages will be installed:
kopano-backup kopano-common kopano-core kopano-dagent kopano-gateway kopano-ical kopano-libs kopano-monitor kopano-search kopano-server kopano-spooler kopano-utils mariadb-client-10.1
mariadb-client-core-10.1 php-mapi python-kopano python-mapi
0 upgraded, 17 newly installed, 4 to remove and 6 not upgraded.
Need to get 0 B/13.8 MB of archives.
After this operation, 30.3 MB disk space will be freed.
Do you want to continue? [Y/n] n
I ran it with
root@nextcloud:~# apt-get install kopano-core --no-install-recommends
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libconfig-inifiles-perl libdbd-mysql-perl libdbi-perl libjemalloc1 libterm-readkey-perl mariadb-common
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
kopano-backup kopano-common kopano-dagent kopano-gateway kopano-ical kopano-libs kopano-monitor kopano-search kopano-server kopano-spooler kopano-utils php-mapi python-kopano python-mapi
Suggested packages:
kopano-webapp
Recommended packages:
mariadb-server | default-mysql-server
The following NEW packages will be installed:
kopano-backup kopano-common kopano-core kopano-dagent kopano-gateway kopano-ical kopano-libs kopano-monitor kopano-search kopano-server kopano-spooler kopano-utils php-mapi python-kopano
python-mapi
0 upgraded, 15 newly installed, 0 to remove and 6 not upgraded.
Need to get 0 B/3,414 kB of archives.
After this operation, 14.0 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
and was successful!