I was able to fix this by using the command TERM="xterm-256color" before running the do-release-upgrade command. the procedure needs to be able to prompt screens during the process that TERM=dumb does not allow apparently.
I was able to fix this by using the command TERM="xterm- 256color" before running the do-release-upgrade command. the procedure needs to be able to prompt screens during the process that TERM=dumb does not allow apparently.