Reproduce bug 1. Access to koha 24.05.01 2. Enable ERM 3. Access ERM and get syntaxt error This is happens because ERM expect a JSON and it receives an 404 html messsage, Testing the url accessing from ERM, API is not responding and ERM fail Http://<koha-server>/api/vi1 --> not found API endpoint is not available but all services are running fine.. I have checked on debian12 koha 24.05 and also using community' s koha demo servers
Does your patron search work? (just a test if the REST API is broken in general) Overall this sounds more like a support request better suited for the mailing list or the Mattermost chat.