'System.NullReferenceException' s'est produite dans Syncfusion.SfSchedule.WinRT.DLL
We have created a simple sample based on the provided information and stack trace. But we are not able to reproduce the mentioned issue from our side. Please refer the prepared sample in the below attachment. Could you please modify the provided sample to reproduce the mentioned issue and also could you please provide us the information about the Essential studio version you are using. So that we can analyze further on the issue and provide you a possible solution.
Please let us know if you have any queries.