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I keep getting a "TypeError: w is null" warning. What is causing this?

Firefox Other
cor-el replied
RedShoxRon
RedShoxRon

It doesn't happen all the time. Usually when I open a new page.

It doesn't happen all the time. Usually when I open a new page.

All Replies (1)

cor-el
cor-el
  • Top 25 Contributor
  • Moderator

This issue can be caused by an extension that isn't working properly.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.