Issue with the Gurtam Maps application

hst-api.wialon.com/gis_render/36_20_11/12243390/tile.png:1 GET https://hst-api.wialon.com/gis_render/36_20_11/12243390/tile.png 401

/**
        * Initialize map (Leaflet)
        *
        * Added handler on click and some one, setting of map
        */
        var _initMap = function(){
                        
            // create Gurtam Maps layer
            app.sections = [];
            var gurtam = L.tileLayer.webGis(wialon.core.Session.getInstance().getBaseGisUrl('render'), {
                attribution: "Gurtam Maps",
                minZoom: 4,
                userId: wialon.core.Session.getInstance().getCurrUser().getId()
            });
            // create map object
            MAP = L.map("map", {
                center: [53.505,28.49],
                zoom: 6,
                layers: [gurtam],
                doubleClickZoom: false,
                dragging: true
            });

            maps = MAP;

            // create map object
            ROUTE = L.polyline([], {color: 'red'}).addTo(MAP);

            MAP.on('mouseup',function(e){
                MAP.removeEventListener('mousemove');
            });

            MAP.on("click", function (evt) {
                var $input;
                /* jshint eqeqeq: false*/
                if(_activeTab == 'tab-search'){
                    $input = $('.search-point.selected');
                    $('input.address-input').removeClass('selected');
                }else{
                    $input = $('input.address-input.selected');
                }
                _searchBlock();
                // var $input = $('input.address-input.selected');
                if($input && $input.length){
                    show_marker(evt.latlng, false, $input, true, function(){
                        $('.add-point').trigger('click', true);
                        _searchBlock();
                    });
                }
            });

            MAP.on("dblclick", function (evt) {
                var $input, cb = function(){};
                /* jshint eqeqeq:false */
                if(_activeTab == 'tab-search'){
                    $input = $('.search-point');
                    if($input.length){
                        show_marker(evt.latlng, false, $input, true, function(){
                            $('.add-point').trigger('click', true);
                        });
                    }
                }else    if(POINTS.length >= 2 && !$('.find-address').val() && POINTS.length < MAX_POINTS){
                    var notFillInputs = _.filter(POINTS, function(point){ return !point.lat || !point.lon; });
                    if(notFillInputs.length){
                        var id = notFillInputs[0].id;
                        if(id)
                            $input = $('.point[data-point-index='+id+']').find('input');
                    }else{
                        $input = $('.find-address');
                        cb = function(){
                            $('.add-point').trigger('click', true);
                        };
                    }
                    _searchBlock();
                    if($input && $input.length){
                        show_marker(evt.latlng, false, $input, true, cb);
                    }
                }else{
                    app.notify.add($.localise.tr('You have reached the limit of points.'), true, 'error');
                }
            });
        };