Bug: Cannot enable dark mode in Firefox

[Graphmaxer]

Expected Behavior

Go in the settings and enable dark mode, nothing happens.

Current Behavior

Nothing

Possible Solution

Fix the code

Error log:

TypeError: "cannot use 'in' operator to search for 'enabled' in 'falseundefinedun...'"
Ctmoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:7254callbackmoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/settings.js:1:3512emoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:12128emitmoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:31407onChangemoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/vendors~home~settings.js:1:47587emoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:12128_withTaskmoz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:41332 app.js:14:10757
	qt moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:10757
	Ft moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:10681
	Ut moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:10549
	Kw5r/</t.prototype.$emit moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:31435
	onChange moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/vendors~home~settings.js:1:47587
	e moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:12128
	ar/i._withTask moz-extension://836f2e99-885c-4f91-9c5d-d905d9f78a66/static/js/app.js:14:41332

Steps to Reproduce (for bugs)

1. Go to settings
2. Enable dark mode
3. Nothing happens

Context

I want to be dark U_U

Your Environment

• Version used: 1.4.11
• Browser Name and version: Firefox 61.0.1
• Operating System and version: Arch Linux (Kernel 4.17.4)

[Alexays]

Yeah, it's because of the fact that I changed the way dark mode was stored a little while ago. have you tried the "Reset Settings" button ?

[Graphmaxer]

Yes it's working if i reset the settings.