update-

package.json

 {
 	"name": "boxdialer",
-	"version": "4.4.9",
+	"version": "4.5.0",
 	"description": "",
 	"main": "src/boxDialer.js",
 	"scripts": {

src/lib/boxDIaler.js

@@ -322,7 +322,7 @@ export class BoxDialer {
 
 	sipRegister = ({ number, secret, wsurl, isIce }) => {
 		try {
-			if (window.alovoice_setversion) {
+			if (window?.alovoice_setversion && packageJson?.version) {
 				window.alovoice_setversion(packageJson?.version);
 			}
 			if (this.options) {