Error 400 when call_service

Hi

I have a problem with register_service and call_service.
Registering a service in the default namespace, make call_service to fail with error : Code: 400, error: 400: Bad Request.
But, registering the same service in custom namespace works.

This following code fails

def initialize(self):

    self.register_service("test/message", self.test_message)   
    self.call_service("test/message")


def test_message(self, plugin, domain, service, data):
    self.log("Hello from test_message")

log line from appdaemon

WARNING HASS: Code: 400, error: 400: Bad Request

lThis following code works

def initialize(self):

    self.set_namespace("custom_ns")
    self.register_service("test/message", self.test_message)   
    self.call_service("test/message", namespace="custom_ns")


def test_message(self, plugin, domain, service, data):
    self.log("Hello from test_message")

log line from appdaemon

INFO volumio_player: Hello from test_message

The problem seems to have appeared suddenly, everything was working well until today. :confounded:
Any idea ?

I had the same issue, have a look here: