Traccar Api call fail

I tried the web app with my traccar demo server in : https://github.com/traccar/traccar-web/tree/master/web/simple and it worked well
but when I make a simple call in Postman : http://demox.traccar.org/api/session?token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I get error: HTTP 404 Not Found - WebApplicationException (SessionResource:95 < ...)
the same token is used in the simple web and in the api call
Is there somthing wrong with my api call?
regards,

Compare your call with what web app sends.

Thank you fo ranswering me
I logged the calls of the web app to the console and I get these :
http://demo3.traccar.org/api/server
http://demo3.traccar.org/api/session?token=xxxxxxxxxxxxxxxxxxxxxxxxxxx
http://demo3.traccar.org/api/devices
I executed these queries in Postman: the first worked well , the second with token I get HTTP 404 Not Found
I seperated the second and executed it alone in a javascript script and it worked well but not in postman or react native script
what can be the problem
this is important because Iam ptryign to create a mobile app for traccar

You need to look at other request parameters (e.g. method), not just the URL.

It is GET method, in addition to that I took the ssame method "ajax" from the web app, I put it in a react native script and i get 404 erro
It is really intriguing
Do you an example of traccar client with react native

No, I don't have react native example. You are clearly missing something. If the call is exactly the same, you will get the same result. There is no magic.

Do i need to create a session somewhere before makign a call to it with api call? (why calling for server before session in the simpel web app)

I'm a bit confused with this question. Server creates sessions, not client. We call server endpoint to get server configuration. It has nothing to do with user session.

sorry for this question. I used base auth (mail + password) to get devices with the api and it worked well, the only request is not working is session with token. Do I need to have nested call server before session like simple web app

No, you don't. I repeat again, server endpoint call has absolutely nothing to do with session call.

Ok So may be I need to send JSessionId from the cookie and since it is sent automatically with firefox I need to code it for ppostman or other framework
sorry for these questions, I am really trying to understand this part