Comment 96 for bug 360818

I look at nm_setting_vpn_get_secret.

nm_setting_vpn_get_secret (NMSettingVPN *setting, const char *key)
{
 g_return_val_if_fail (NM_IS_SETTING_VPN (setting), NULL);

 return (const char *) g_hash_table_lookup (NM_SETTING_VPN_GET_PRIVATE (setting)->secrets, key);
}
It's return TRUE in one case, if setting->secrets has a key. NULL we can get in two cases, if 'settings' has a wrong type and if there is no key in 'settings -> secrets'. You say that setting already verified, than something wrong with settings -> secrets.

May be something wrong with rights when reading secrets?

Sorry for bad english.