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?