why fo I get error with IB data retrieving with a timer function?

I tried to retrieve data from interactive brokers using a timer function and get this error: Error using comeventcallback (line 24) Error firing event 'errMsg' to '@(varargin)ibBuiltInErrMsgEventHandler(varargin{:},x)'. Attached see my codes.

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Asked:

on 6 Dec 2016

Closed:

on 20 Aug 2021

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