Today I installed a module named " JO K2 Slideshow " , when I visit the backend settings of that module, I saw following error message at Joomla backend:

There is no filename and line number, just this single line of error message. So I have no idea what is wrong.

My Joomla version is v3.6.5, K2 version is v2.7.2 dev, both are upgraded from old lower versions.

Could you please tell me what is wrong?

Unfortunately this is an issue with the module itself.
Is it compatible with the 2.7.x series?

The author of that module said it is compatible with K2 2.7. But I don't think so.

However, I am not a php programmer, so I can not debug this and find out which code is wrong.

Thank you.

From the context I think this is a helper function which loads jQuery.
Since you are on J!3.x (i suppose) you can omit this functionality.

In your case I would ask on which file of the extension is this function present so you can comment it out.

hi, i ave the same problem with minitek wall pro module and Vina Camera Slider for K2.

Since the last version of K2.

You know haw to fix this issue ?

Thank's.

Hello,
You need to report this to the extension's developers.

Vina Camera Slider fixed the issue : vinagecko.com/joomla-modules/item/102-camera-slider-for-k2

Nice to hear that :)

Nice, and your store is built with K2 as well!

I have the same issue.
Problem is when i want to edit ANY module :(

Despite that i get:
() Error: Call to undefined method K2HelperHTML:::loadJQuery ()