Call to undefined function problem

I'm really blind about this one ... problem is that it seems my Wordpress website which has one of real estate themes installed can't load properly (it loads partially with this error shown): Call to undefined function property_price().

Problems seems to be in wp-content/themes/locality-main/localitywp/sliders/fullwidth-slider.php on line 41. Thing is, very weird thing is that this happened without me or anyone else changing anything on website. Just out of the blue.

Can someone at least direct me where and how to bugshoot this or hopefully fix it?

Thanks.