Ubuntu - "List of sources not found" error when installing release build

[Brave-Matt]

Description

I have users reporting that they're unable to install release or beta via terminal instructions. When testing, I was also unable to install and received the following errors:

This was tested on a fresh install of both Ubuntu and Brave browser. Note that the errors are thrown after entering the sudo apt update command.
@diracdeltas @mbacchi @mihaiplesa

Steps to Reproduce

1. Open terminal in Ubuntu
2. Enter install instructions via readthedocs or help center

Actual result:

As screenshot above indicates, errors are thrown after sudo apt update is entered in the terminal

Expected result:

Brave should install

Reproduces how often:

Every time

Brave version (brave://version info)

Release/Beta/Dev

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds?
  Yes

Website problems only:

• Does the issue resolve itself when disabling Brave Shields? N/A
• Is the issue reproducible on the latest version of Chrome? N/A

Additional Information

Here is one user report, will dig for others if they would be useful to have:
https://www.reddit.com/r/brave_browser/comments/9wrtzf/installation_of_brave_release_channel_in_ubuntu/

[avndp]

Beta can be installed with these instructions: https://aavo.in/steps-how-to-install-brave-browser-in-ubuntu-18-10-cosmic-cuttlefish/

[mihaiplesa]

Just tested and works for me, can you please attach the output of the following commands?

lsb_release -sc

ls -la /etc/apt/sources.list.d/

cat /etc/apt/sources.list.d/brave-browser-release-bionic.list

[Brave-Matt]

[mbacchi]

By appending to the list each time you're not removing the other malformed entries. Once you run this command one time you don't need to do it again. Remove all but the last line of the file /etc/apt/sources.list.d/brave-browser-release-bionic.list and try again. Also, remove the file /etc/apt/sources.list.d/brave- as it must have been a mistake and is not being used.

[mihaiplesa]

That '-a' has to be taken out from tee in the docs.

[Brave-Matt]

☝️ This solved the issue on my end
Docs should probably be updated.

[Brave-Matt]

Have a user still reporting the same error after removing the -a from tee command. Haven't had anyone else report yet. https://www.reddit.com/r/brave_browser/comments/9wrtzf/installation_of_brave_release_channel_in_ubuntu/e9pzfgs

[bbondy]

Setting missing milestone to 0.59.x and missing QA/Yes label.

[srirambv]

Verification passed on

Brave	0.60.5 Chromium: 72.0.3626.28 (Official Build) dev(64-bit)
Revision	997b1040b63bac324e815797ba52be0cd8f616ed-refs/branch-heads/3626@{#461}
OS	Linux
Brave	0.59.14 Chromium: 72.0.3626.28 (Official Build) beta(64-bit)
Revision	997b1040b63bac324e815797ba52be0cd8f616ed-refs/branch-heads/3626@{#461}
OS	Linux
Brave	0.58.18 Chromium: 71.0.3578.98 (Official Build) (64-bit)
Revision	15234034d19b85dcd9a03b164ae89d04145d8368-refs/branch-heads/3578@{#897}
OS	Linux