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$(…).find(…).once is not a function Javascript error in Drupal [closed]

I am getting this error in my console which is causing some other JS items not to work

    Uncaught TypeError: $(...).find(...).once is not a function         at Object.attach (eval at globalEval (jquery.min.js?v=2.2.3:2), <anonymous>:156:44)         at Object.Drupal.attachBehaviors (drupal.js?v=8.2.5:168)         at insert (ajax.js?v=8.2.5:1084)         at Drupal.AjaxCommands.loadEditorsAjax.commands.insert (quickedit.js?v=8.2.5:523)         at Drupal.Ajax.success (ajax.js?ojj3xe:155)         at Object.success (ajax.js?v=8.2.5:505)         at i (jquery.min.js?v=2.2.3:2)         at Object.fireWith [as resolveWith] (jquery.min.js?v=2.2.3:2)         at z (jquery.min.js?v=2.2.3:4)         at XMLHttpRequest.<anonymous> (jquery.min.js?v=2.2.3:4)

My current Drupal version 8.2.5 is using jquery 2.2.3 so I am not sure what is going on here.

Any ideas? I tried updating jquery to 3.0.0 but that didn’t work. Same error.

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$(…).find(…).once is not a function Javascript error in Drupal [closed]

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