The redirect URI in the request, https://plusfinance.ru/?option=com_slogin&task=check&plugin=google, does not match the ones authorized for the OAuth client. To update the authorized redirect URIs, visit: https://console.developers.google.com/apis/credentials/oauthclient/419829235899-dtbrmev4da0blbb4sshlpfg71bmp9f5i.apps.googleusercontent.com?project=419829235899