use a fixed import for canvg

dist/editor/system/extensions/ext-locale/placemark/en.js

@@ -1,49 +0,0 @@
-System.register([], function (exports) {
-  'use strict';
-  return {
-    execute: function () {
-
-      var en = exports('default', {
-        name: 'placemark',
-        langList: [
-          {id: 'nomarker', title: 'No Marker'},
-          {id: 'leftarrow', title: 'Left Arrow'},
-          {id: 'rightarrow', title: 'Right Arrow'},
-          {id: 'forwardslash', title: 'Forward Slash'},
-          {id: 'reverseslash', title: 'Reverse Slash'},
-          {id: 'verticalslash', title: 'Vertical Slash'},
-          {id: 'box', title: 'Box'},
-          {id: 'star', title: 'Star'},
-          {id: 'xmark', title: 'X'},
-          {id: 'triangle', title: 'Triangle'},
-          {id: 'mcircle', title: 'Circle'},
-          {id: 'leftarrow_o', title: 'Open Left Arrow'},
-          {id: 'rightarrow_o', title: 'Open Right Arrow'},
-          {id: 'box_o', title: 'Open Box'},
-          {id: 'star_o', title: 'Open Star'},
-          {id: 'triangle_o', title: 'Open Triangle'},
-          {id: 'mcircle_o', title: 'Open Circle'}
-        ],
-        buttons: [
-          {
-            title: 'Placemark Tool'
-          }
-        ],
-        contextTools: [
-          {
-            title: 'Select Place marker type'
-          },
-          {
-            title: 'Text on separated with ; ',
-            label: 'Text'
-          },
-          {
-            title: 'Font for text',
-            label: ''
-          }
-        ]
-      });
-
-    }
-  };
-});