Guard for contentWindow == null (#930)

2018-02-26 11:44:15 -08:00
parent ff658c86ff
commit 9f3458fcd1
1 changed files with 1 additions and 1 deletions
@@ -54,7 +54,7 @@ class HaPanelHassio extends
  }

  _updateProperties(data) {
-    const setProperties = this.$.iframe.contentWindow.setProperties;
+    const setProperties = this.$.iframe.contentWindow && this.$.iframe.contentWindow.setProperties;

    // Delay calling setProperties until iframe loaded
    if (!setProperties) {