Dear all, Mendix Studio Version : 9.10 Category : API's / Rest service I’m running into an error when using JSON Structure. Console Error: An error occurred while executing an action of MijnHypotheker.DocumentUploaden_page.actionButton1: Error: An error occurred while executing an action of MijnHypotheker.DocumentUploaden_page.actionButton1: at http://localhost:8080/mxclientsystem/mxui/mxui.js?637811277359287773:68:121234 at we (http://localhost:8080/mxclientsystem/mxui/mxui.js?637811277359287773:24:6501) at i (http://localhost:8080/mxclientsystem/mxui/mxui.js?637811277359287773:24:6402) at x (http://localhost:8080/mxclientsystem/mxui/mxui.js?637811277359287773:66:5472) Does anyone knows what causes this error comes from and/or how to aproach this toward a solution? Thanks in advance for your help, Jan