Google API PHP Refresh Token returns NULL
问题 I'm using the Google APIs Client Library for PHP for offline authentication, but when I use this code: $this->google->refreshToken($result["google_refresh_token"])); it returns NULL. $this->google refers to an instance of the Google_Client class. Anyone an idea what this could be? If I try to change the given refresh token it returns a Google Exception Error, so it should be a valid token. Thank you! Edit: 'client_id' => 'myclientid', 'client_secret' => 'myclientsecret', 'redirect_uri' =>