Cannot download flash player! <ubuntu.

[boblfixit6]

I am using UBUNTU for OS. Need Adobe Flash player. Trying to download the APT for DEBIAN?UBUNTU.  I get an error message: Unknown channel 'bionic-partner' The channel 'bionic partner' is not known. Nothing else happens! HELP! I've been working on this for over a week!

[moderator: added OS version to title for clarity]

[_maria_]

I replied to your original post, Trying to install Flash Player on Ubuntu , 3 days ago. Reposting reply here:

Looks like the partner repository hasn't been added to your system.  See the Ubuntu documentation at https://help.ubuntu.com/stable/ubuntu-help/net-install-flash.html.en

Locking duplicate post.

<edited>