Do not get any reply/timeout when trying to login using the JS MeetingManagement sample (after config file was uploaded)

LOG of sample html file:

20:23:53: User resources request failed, login rejected
20:23:53: Get resources request fail, response=%o
20:23:52: Login request. STEP 1: Getting guest resources.
20:23:52: Login request. START
20:23:51: Configuration has been applied.
20:23:51: Applying config from file...

Is this a backend (https://dev-esg106.uplab.com:8443/ups/resources/tenants/dev-org106/) issue ?

Thx