Error in console

Hello Team,

I have installed testimonial plugin on my site. Backend is working fine. But on front site there are some issues:

1) Js errror in console

showsrstemplate.js?shop=top-shelf-paws.myshopify.com:1 Uncaught ReferenceError: $ is not defined
at showsrstemplate.js?shop=top-shelf-paws.myshopify.com:1
at showsrstemplate.js?shop=top-shelf-paws.myshopify.com:1

2) I have selected one row layout but its showing data in 2 rows and still display navigation to slide. But when we slide it show blank section.

you can check this on https://pebblenaturals.com home page and product page.

To access site use password: pebble

Please guide me how to resolve this issue.

Thanks