Issue installing GRR on Security onion 16.04 and ubuntu 20.04

Hello Folks,

I have been trying to install GRR Server on Security onion 16.04 and have been experiencing issues. Firstly I tried installing the docker image using the instructions [here](https://docs.securityonion.net/en/2.3/grr.html), but when logging to the server using hostname I get a proxy error. I tried installing the GRR as a service using instructions [here](https://grr-doc.readthedocs.io/en/latest/installing-grr-server/from-release-deb.html), but each time when trying the first step of logging into SQL with the localhost password to create a grr database, I get an error "ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)". I have tried blank password and even resetting the password but found that mysql service doesn't let me. I tried installing GRR on ubuntu 20.04 using the steps here but got an error "Sub-process /usr/bin/dpkg returned an error code" when installing.

I have been scratching my head all day and haven't been able to resolve the issue. I would really appreciate any help or feedback on this.