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My Control Panel has stopped working since upgrading to Craft v2.7.0. in chrome. I get the following JS error no matter what is clicked in the entry fields and no action is taken. So for example if I want to remove and image and click the minus button nothing happens. If I try and add Matrix fields nothing happens. All of these were working prior to the update.

Uncaught TypeError: Cannot read property 'length' of null at n.constructor.getWorkingTaskInfo (cp.js:863) at n.constructor.setTaskInfo (cp.js:832)

I'm running on PHP 7.0.13 any ideas?

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  • Also just checked it on firefox same issue. – Lettie Aug 25 '18 at 10:47
  • Tried upgrading to v 2.7.2 and still throwing errors. – Lettie Aug 26 '18 at 12:51
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Try reinstalling Craft. I believe there was another report from a user that had similar JS errors. Try replacing the core Craft files in craft/app and see if that helps.

Craft 2.7.1 was also recently released.

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  • Probably worth trying to just clear out craft/storage/runtime/cache folder, too. – Brad Bell Aug 28 '18 at 1:07

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