K2 Item view —Call to undefined method K2HelperHTML::loadjQuery()

by philipp   Last Updated October 27, 2017 12:10 PM

my client has updated to the latest version of Joomla: 3.8.1 und K2 to 2.8.0. Frontend and Backend are working, but it is not possible to edit a k2 item or k2 category. List view is working, but not the edit view.

Here a stack trace:

enter image description here

Any Ideas?

Tags : k2 joomla3.8

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