Only listen for changes on the model if the model exists
Only listen for changes on the model if the model exists

dak/webview,katalysteducation/webview,dak/webview,katalysteducation/webview,Connexions/webview,katalysteducation/webview,katalysteducation/webview,carolinelane10/webview,Connexions/webview,Connexions/webview,Connexions/webview,dak/webview