Cannot read properties of null (reading 'hasTrackId') TypeError: Cannot read properties of null (reading 'hasTrackId') at window.mx.addOnLoad.e.onPersistViewState (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:72:903154) at http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:72:870995 at l (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:72:9230) at Generator._invoke (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:72:8983) at Generator.next (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:72:9589) at r (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:39:73857) at u (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:39:74068) at http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:39:74127 at new Promise (<anonymous>) at Object.<anonymous> (http://localhost:8080/mxclientsystem/mxui/mxui.js?638017167780943394:39:74008)