fix

Author: patricklx

ember_debug/libs/render-tree.js

@@ -43,9 +43,9 @@ class InElementSupportProvider {
 
     const pushElement = NewElementBuilder.prototype.pushElement;
     NewElementBuilder.prototype.pushElement = function (...args) {
-      const parent = this.env.debugRenderTree.stack.current;
+      const parent = this.env?.debugRenderTree.stack.current;
       args[0].__emberInspectorParentNode =
-        this.env.debugRenderTree.nodeFor(parent);
+        this.env?.debugRenderTree.nodeFor(parent);
       return pushElement.call(this, ...args);
     };