Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Търсене в помощните статии

Избягвайте измамите при поддръжката. Никога няма да ви помолим да се обадите или изпратите SMS на телефонен номер или да споделите лична информация. Моля, докладвайте подозрителна активност на "Докладване за злоупотреба".

Learn More

Тази тема беше архивирана. Моля, задайте нов въпрос ако имате нужда от помощ.

Error: document.getElementsByTagName("head")[0] is undefined

  • 1 отговор
  • 84 имат този проблем
  • 1 изглед
  • Последен отговор от cor-el

ragnoro
ragnoro
more options

javascript crash Error: document.getElementsByTagName("head")[0] is undefined

How can ı solve this problem

javascript crash Error: document.getElementsByTagName("head")[0] is undefined How can ı solve this problem

Всички отговори (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.

  • Use "Disable all add-ons" on the Safe mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")