Google Authentication for embedded Web View 403: disallowed_useragent

I have built this react native wrapper to load a web app. The web app is integrated with google login. But when the web app is loaded via the react native web app it says error 403 : disallowed_useragent.
return (
<WebView
ref={webviewRef}
startInLoadingState={true}
style={{
marginTop: Platform.OS == “ios” ? 45 : 20,
backgroundColor: “#00308F”,
flex: 1,
}}
onNavigationStateChange={handleWebViewNavigationStateChange}
source={{
uri: URL
//uri:
// Platform.OS == “android”
// ? URL_AND
// : URL_IOS,
}}
originWhitelist={[“https://", "http://”]}
allowFileAccess={true}

  setSupportMultipleWindows={true}
/>

);
};

You ca’t use HTTP, you must use HTTPS, so you’ll need an SSL certificate.