Unfortunately there are no logs available, because it fails during deserialization
CallHandler.php(73): serialize_method("users.getUsers",{"id":[{"_":"inputUserSelf"}]}) MTProto.php(659): method_call("users.getUsers",{"id":[{"_":"inputUserSelf"}]},{"datacenter":2}) MTProto.php(281): get_self() __wakeup()
if that helps