TypeError: document.getElementById(myId) is null This message keeps popping up - even after i have closed it repeatedly... simple help please?
When im just browsing on the internet, this message keeps popping up - no matter how many damn times i close it! I don't understand what plug -ins (etc etc) means, so please could you answer in the simplest way possible?
All Replies (3)
Chosen Solution
If this happens on multiple different sites, it could be caused by an add-on that is trying (failing?) to access the pages or modify itself in response to the pages.
You might just disable all nonessential add-ons here and then restart Firefox and see whether that helps:
orange Firefox button or classic Tools menu > Add-ons > Extensions category
orange Firefox button or classic Tools menu > Add-ons > Plugins category
Thanks for the reply, it seemed to have worked after i managed to fully close 'Snap.do' - this was add on from firefox itself.
Thank you for posting the solution. The snap.do browser add-ons are not official Mozilla products. Normally, you would need to install them after you install Firefox. However, if the Firefox installer finds add-ons already on your system, it might import them, so that could explain why it appeared to be included.