Nymi agent is missing. Start the Nymi agent service or contact your administrator

The following errors appear in the nymi_api.log file:

                ERROR  FAILURE - AddEnrollmentEventEntry(api/EnrollmentEvents): NotFound - 'Not Found' - uri:'https://nes_server/instance/api/EnrollmentEvents' - headers: '' Response content: {"Message":"No HTTP resource was found that matches the request URI 'https://nes.qalab.nymi.com/CWP-2785-Fix/api/EnrollmentEvents'."}
                ERROR  Failed at Create <Nymi.Model.NesModel.EnrollmentEvent>, api/EnrollmentEvents
                NEM.Server.WebApiException Not Found
                ERROR  Failed to save config into band.
                NEM.Server.WebApiException Not FoundINFO - connecting to Agent at ws://agent_server_name:9120/socket/websocket
                ERROR - Could not connect to websocket server. Attempting to connect again.
                INFO - sending update to nea {"operation":"error","exchange":null,"status":4000,"payload":{},"error":{"errordescription":"Nymi Agent missing.","errorspecifics":""}}
            

Cause

The firewall between the Nymi Band Application host and the Nymi Agent server does not allow websocket traffic over port 9120.

Resolution

Update the firewall port rules to enabled bi-directional communication between the enrollment terminal and the Nymi Agent server.