Installing beta on Brave results in Missing container: other bookmarks

[Poikilos]

Describe the issue you are experiencing
Trying to unzip then "Load Unpacked" extension from brave-browser-beta fails with an error: Missing container: other bookmarks

How can the issue be reproduced?
Steps to reproduce the behavior:

1. Unzip the xBrowserSync v1.5.2-beta1 chrome extension.
2. Install brave-browser-beta (See https://brave-browser.readthedocs.io/en/latest/installing-brave.html#beta-channel-installation)
3. Open brave-browser-beta executable (separate from the brave-browser-stable or other executable).
4. Navigate to about:extensions (which is an alias for chrome://extensions/)
5. Turn on "developer mode" switch at top right.
6. Click "Load Unpacked"
7. Choose the directory that is the unzipped extension.

Screenshots

Desktop browser
Please complete the following information for all affected desktop browsers:

• OS: Fedora 31
• Browser: Brave (beta)
• Version: Version 1.5.108 Chromium: 80.0.3987.132 (Official Build) beta (64-bit)

Application log

Log entries

If this is not sufficient information, tell me what and where information can be gathered.

Missing container: other bookmarks

@rob4226 provides a full log containing the error, along with some details, here:#100 (comment)

[nero120]

@Poikilos see the later posts in #100, you need to be using brave v1.7.x (which is only currently available from the nightly build).

[cordova69]

I'm at Version 1.71.114 Chromium:
"130.0.6723.58 and getting the [warn] Missing container: other bookmarks
bookmarks.sync: [10113] LocalContainerNotFound"
Tried to create a new profile and when syncing you receive: Unexpected bookmarks structure