Public bug reported:
Upon installation, gnome shell attempts to load system-monitor extension
but it fails with the following errors:
```
JS ERROR: Extension system-moni...@paradoxxx.zero.gmail.com: Error: Tried to
construct an object without a GType; are you using GObject.registerClass() when
inheriting from a GObject type?
SystemMonitor_TipItem@/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js:640:9
tip_format@/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js:898:27
SystemMonitor_Cpu@/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js:1196:14
createCpus@/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js:1363:20
enable@/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js:2316:26
_callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:161:32
loadExtension@resource:///org/gnome/shell/ui/extensionSystem.js:312:26
```
```
JS ERROR: TypeError: this.tip_labels[i] is undefined
update@/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js:925:56
```
Also a warning:
```
JS WARNING:
[/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/extension.js
925]: reference to undefined property 0
```
I get yet one more message pertaining multiple extensions but including many
messages from system-monitor, but I think this to be mostly a warning:
```
Some code called array.toString() on a Uint8Array instance. Previously this
would have interpreted the bytes of the array as a string, but that is
nonstandard. In the future this will return the bytes as comma-separated
digits. For the time being, the old behavior has been preserved, but please fix
your code anyway to explicitly call ByteArray.toString(array).
(Note that array.toString() may have been called implicitly.)
0 check_sensors()
["/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/prefs.js":59:16]
1 add()
["/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/prefs.js":218:37]
2 SystemMonitor_App/<()
["/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/prefs.js":351:47]
3 forEach() ["self-hosted":266:12]
4 SystemMonitor_App()
["/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/prefs.js":307:13]
5 buildPrefsWidget()
["/usr/share/gnome-shell/extensions/system-moni...@paradoxxx.zero.gmail.com/prefs.js":366:17]
6 _showPrefs() ["resource:///org/gnome/shell/extensionPrefs/main.js":174:37]
7 openPrefs() ["resource:///org/gnome/shell/extensionPrefs/main.js":159:23]
8 _init/<() ["resource:///org/gnome/shell/extensionPrefs/main.js":600:61]
9 main() ["resource:///org/gnome/shell/extensionPrefs/main.js":762:22]
10 <TOP LEVEL> ["<main>":1:47]
```
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell-extension-system-monitor 38-2
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Apr 2 09:44:25 2020
InstallationDate: Installed on 2019-02-03 (423 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
SourcePackage: gnome-shell-extension-system-monitor
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell-extension-system-monitor (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1870285
Title:
extension system-monitor cannot be loaded, causes errors
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