Hello

try in file – \wp-content\plugins\woocommerce-products-filter\ext\meta_filter\html_types\slider\index.php – change function create_meta_query

    public function create_meta_query(){
        $curr_request=$this->check_current_request();
        if($curr_request){  
            $curr_range=array();
            $curr_range=explode("^",$curr_request);
            $from=0;
            $to=0;
            $from= floatval($curr_range[0]); 
            if(count($curr_range)>1){
                $to= floatval($curr_range[1]);                 
            }else{
                $range=explode("^",$this->range,2);
                $to=$range[1];
            }
            $type=apply_filters('woof_slider_meta_query_type','numeric',$this->meta_key);
            $meta=array(
                'key' => $this->meta_key,
                'value'   => array( $from, $to ),
		'type'    => $type,
                'compare'=>'BETWEEN',
            );    
            return $meta;
        }else{
            return false;
        }
    }

Hello

It looks like you’re doing something wrong

I took this code from working site