G3.23 (64-bit) based on Gecko 78.12.0 Waterfox

XML Parse Error: tanımlanmamış varlık
Konum: chrome://browser/content/browser.xhtml
Satır: 2000, Sütun: 9:

toolbarbutton id="appMenu-restart-button"--------^

Solution Safe Mode and remove this extension

Note: You can also start Firefox in Safe Mode by holding down the shift key while starting Firefox.