getTrackId of null TypeError

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Hi Does anyone know how to resolve this error. Cannot read property 'getTrackId' of null TypeError: Cannot read property 'getTrackId' of null     at t.reloadPage (http://localhost:8080/mxclientsystem/mxui/mxui.js?637307966101034747:73:276853)     at http://localhost:8080/mxclientsystem/mxui/mxui.js?637307966101034747:73:204660     at http://localhost:8080/mxclientsystem/mxui/mxui.js?637307966101034747:73:373371     at Array.forEach (<anonymous>)     at WebSocket.socket.onmessage (http://localhost:8080/mxclientsystem/mxui/mxui.js?637307966101034747:73:373343)
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Hi i think the value of 'getTrackid' is resulting to be null value ,in order to resolve this error you need handle the null value exception by doing custom exception handling within your microflow.

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