Does not work on Gnome 3.34

[sirex]

I get these errors:

Usage of object.actor is deprecated for Indicator
get@resource:///org/gnome/shell/ui/environment.js:249:29
_init@/usr/share/gnome-shell/extensions/timer@olebowle.gmx.com/extension.js:124:9
wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
enable@/usr/share/gnome-shell/extensions/timer@olebowle.gmx.com/extension.js:421:17
_callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:131:13
_onEnabledExtensionsChanged/<@resource:///org/gnome/shell/ui/extensionSystem.js:398:13
_onEnabledExtensionsChanged@resource:///org/gnome/shell/ui/extensionSystem.js:395:9

JS ERROR: Extension timer@olebowle.gmx.com: Error: No signal 'value-changed' on object 'Gjs_Slider'
_buildTimerMenu@/usr/share/gnome-shell/extensions/timer@olebowle.gmx.com/extension.js:215:9
wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
_init@/usr/share/gnome-shell/extensions/timer@olebowle.gmx.com/extension.js:179:9
wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
enable@/usr/share/gnome-shell/extensions/timer@olebowle.gmx.com/extension.js:421:17
_callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:131:13
_onEnabledExtensionsChanged/<@resource:///org/gnome/shell/ui/extensionSystem.js:398:13
_onEnabledExtensionsChanged@resource:///org/gnome/shell/ui/extensionSystem.js:395:9

My gnome version: 3.34.1
I installed this package from AUR: https://aur.archlinux.org/packages/gnome-shell-extension-timer-git/
gnome-shell-extension-timer-git package version: 20121103-1