I ended up installing the latest OS and all required tool chain since support for ubuntu 19.10 has ended and repos are archived. Nodebb had no issues with Redis once the redis-server was started.
I still have unrelated issue with NPM not creating global links of my plugin folders and linking to the nodebb instance like it did before. My script creates links for each plugin project but only the last link is accessible and the rest disappearing. Possibly NPM and dependency issues but I am still investigating.
Thank you very much for your support.