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I get this error so often on different website, why?

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  • 1 has this problem
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  • Last reply by cor-el

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Error: document.getElementById(...) is null

Error: document.getElementById(...) is null

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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 ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window