I am able to righ-click on emails and open the Alfresco plugin dialog box but I always get:

Error fetching data from Alfresco:
Authentication error: Unexpected HTTP code (404 Not Found)

I am able to login to the Alfresco URL () which I put in the config.php, from a browser and I can see the Spaces.

I modified to app:company_home//* but I always get this error.

What could it be ?