Hi,
well, I'm totaly sure I've copied this url from Api Express.
There's no other place where I could have found it.
I can confirm that this url (this schema) was in all my services made with Api Express and I had to change them all to have my app works again.
All was working fine untill yesterday and absolutly no changes were made in my app.
I have these URL since the very beginning of api express.
Sylvain