The issue is caused by your ajax call which is returning the empty response.
like see in your code
$.ajax({
url : ajaxurl,
type: 'post',
data : {
action : 'playersmain',
position: position,
ranking: ranking,
search: search,
state: state
},
success : function( response ) {
$(".ajax-content2").html(response);
}
});
This ajax call is made through themes/probeis-child/assets/scripts.js