update 1.4.7

package.json

 {
 	"name": "boxdialer",
-	"version": "1.4.6",
+	"version": "1.4.7",
 	"description": "",
 	"main": "src/boxDialer.js",
 	"scripts": {

src/lib/boxDIaler.js

@@ -239,7 +239,7 @@ export class BoxDialer {
 		if (window.BX24 && window.BX24.placement) {
 			window?.BX24.placement.call('CallCardClose', {}, () => {});
 		} else if (window.alovoicePhone && window.alovoicePhone.callMethods) {
-			window.alovoicePhone.close();
+			window?.alovoicePhone?.close();
 		}
 	}
 	setGuiPhoneState({ stateCode, funcName, funcParam }) {