Script error when trying to delete comment

I did some investigating.
In file sgComment.js in folder assets/page/scripts is the following code:

SGComment.ajaxDelete = function(id) {
	if (confirm('Are you sure?')) {
		var deleteAction = 'Comment_ajaxDelete';
		var ajaxHandler = new sgrbRequestHandler(deleteAction, {id: id});
		ajaxHandler.dataType = 'html';
		ajaxHandler.callback = function(response){
			location.reload();
		};
		ajaxHandler.run();
	}
};

when changed to

SGComment.prototype.ajaxDelete = function(id) {
	if (confirm('Are you sure?')) {
		var deleteAction = 'Comment_ajaxDelete';
		var ajaxHandler = new sgrbRequestHandler(deleteAction, {id: id});
		ajaxHandler.dataType = 'html';
		ajaxHandler.callback = function(response){
			location.reload();
		};
		ajaxHandler.run();
	}
};

the error is gone.

So please update your file!

Thanks for replying and picking up the fix.