JS ERROR: Extension tp_wattmeter@gistart: Error: Tried to construct an object without a GType; are you using GObject.registerClass() when inheriting from a GObject type?
TPIndicator@/home/user/.local/share/gnome-shell/extensions/tp_wattmeter@gistart/extension.js:28:9
TPWattMeter@/home/user/.local/share/gnome-shell/extensions/tp_wattmeter@gistart/extension.js:108:32
enable@/home/user/.local/share/gnome-shell/extensions/tp_wattmeter@gistart/extension.js:131:20
_callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:166:32
loadExtension@resource:///org/gnome/shell/ui/extensionSystem.js:336:26
callback@resource:///org/gnome/shell/ui/extensionDownloader.js:232:39
gotExtensionZipFile/<@resource:///org/gnome/shell/ui/extensionDownloader.js:115:13