when I install mod_sj_k2_extraslider_v3.0.1 ap appears this message

"Please install and create the database of k2 component before using the module"
what's going on?
How do I solve?

Dear patdigital

Our module support to use the k2 component. so please install the k2 component for your site, then create the category and item k2. then you can add your category k2 in our module.

thanks

I already have a K2 component installed.
I did the steps indicated but I still have the same problem
Another problem arose. a new poster
"Parameter must be an array or an object that implements Countable in C: \ xampp \ htdocs \ cnai2 \ components \ com_k2 \ models \ item.php on line 763"
Can you help me???

Dear patdigital

It is the issue of k2 component with php7.x
please refer www.joomlaworks.net/forum/k2-en/50035-multiple-k2-errors-after-upgrade-to-php-7-3-0

thanks