jstree adding checkbox plugin causes Uncaught TypeError: Cannot read property 'selected' of undefined

I'm using the jstree jquery plugin to build a tree with ~330nodes in 3 different levels.

When I add the checkbox plugin to add checkboxes to each tree node, i receive the error Uncaught TypeError: Cannot read property 'selected' of undefined. The div where the tree is set to appear just shows a Loading message. $(document).ready(function() {

buildTreeJson((testTree) => {
    $(function () { $('#jstreetest').jstree({
      "core" : {
        "data" :  testTree,
        "themes" : {
          "variant" : "large"
        }
    },
"checkbox" : {
      "keep_selected_style" : false
    },
    "plugins": ["themes", "checkbox", "changed"]
    }); });
  });

...

Removing the checkbox plugin I have no issues.