I am trying to update from Ubuntu 22.04 to a clean install of Ubuntu 26.04, and therefore have to reinstall all apts including CQRlog 2.5.2-6 .
1. I installed Ubuntu 26.04 LTS and it behaves successfully.

2. I installed mariadb-server and mariadb-client with these terminal commands:
sudo apt install mariadb-server mariadb-client

3. I installed CQRlog with this command:
sudo apt install cqrlog

4. From the Ubuntu desktop, I open the CQRLOG application.

5. An error window quickly pops up and says:
Error during connection to database: TMySQL57Connection:
Server connect failed.
Then a second window appears suggesting searching the FAQ on CQRLOG website, then posting to this forum.

6. The FAQ encouraged loading a repository with "add-apt-repository ppa:ok2cqr/ppa" but that appears to be missing Release files.

7. The second suggestion from FAQ was "sudo apt-get install cqrlog" which outputs
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
cqrlog is already the newest version (2.5.2-6).
Solving dependencies... Done
0 upgraded, 0 newly installed, 0 to remove and 23 not upgraded.

8. Finally, the FAQ suggested writing the forum and attaching the last 20 lines of mysql.err file. I cannot find such a file. The folder Home/.config/cqrlog/database contains ONLY the file mysql.cnf configuration file.

Please help. I am at a loss to know how to proceed. The database is obviously incorrectly constructed and no connection seems even possible.

Thanks,
Joe Traylor, N0NOW