Button is null

[3ibod]

Describe the bug
Installing manjaro and gnome, the error haunts me even before gnome was shipped with this plugin, probably since version 42

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Extensions'
2. Click on 'Extensions'
3. See error

Expected behavior
See the plugin in action

Environment (please complete the following information):

• OS: [5.15.78-1-MANJARO]
• GNOME Shell version [43.1]
• Unite version [69]

Logs

-- Boot 21dc9f44b54e424cbc309631ee6b71d3 --
-- Boot 34f2e4b5b1264caca2702545588f6d88 --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
Nov 24 13:02:25 cumass gnome-shell[1128]: JS ERROR: Extension unite@hardpixel.eu: TypeError: buttons is null
                                          addButtons@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/buttons.>
                                          _onLayoutChange@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/pan>
                                          _onPositionChange@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/p>
                                          activate@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/panel.js:7>
                                          onChange@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/handlers.j>
                                          add/feature._doActivate@/usr/share/gnome-shell/extensions/unite@hardpixe>
                                          activate/<@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/handlers>
                                          activate@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/handlers.j>
                                          activate@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/panel.js:6>
                                          activate@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/extension.>
                                          enable@/usr/share/gnome-shell/extensions/unite@hardpixel.eu/extension.js>
                                          _callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:1>
                                          loadExtension@resource:///org/gnome/shell/ui/extensionSystem.js:385:26
                                          _loadExtensions/<@resource:///org/gnome/shell/ui/extensionSystem.js:633:>
                                          collectFromDatadirs@resource:///org/gnome/shell/misc/fileUtils.js:28:28
                                          _loadExtensions@resource:///org/gnome/shell/ui/extensionSystem.js:612:19
                                          _enableAllExtensions@resource:///org/gnome/shell/ui/extensionSystem.js:6>
                                          _sessionUpdated@resource:///org/gnome/shell/ui/extensionSystem.js:659:14
                                          init@resource:///org/gnome/shell/ui/extensionSystem.js:57:14
                                          _initializeUI@resource:///org/gnome/shell/ui/main.js:309:22
                                          start@resource:///org/gnome/shell/ui/main.js:186:5
                                          @resource:///org/gnome/shell/ui/init.js:6:17
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --
-- Boot 0d89d6c39f29474a884fb6efe9aee5aa --
-- Boot 6b3b6a675e194f65bd0f0fb932ffb13c --

```.

**Additional context**
Add any other context about the problem here.

[larsblumberg]

Same problem here on Pop_OS 22.10 the moment I enable the Unity extension.

[3ibod]

Still not work

[jonian]

@3ibod the issue is fixed in master branch but is not released on gnome extensions yet.