Error when trying to move a schema item into another package

bugs
1

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Error
Object reference not set to an instance of an object.

Object reference not set to an instance of an object.

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Stack trace

at Origam.Workbench.MoveToPackageForm.packageComboBox_SelectedIndexChanged(Object sender, EventArgs e) in C:\Users\urbanek\Desktop\leco\origam-architect\backend\Origam.Workbench\MoveToPackageForm.cs:line 159
at System.Windows.Forms.ComboBox.OnSelectedIndexChanged(EventArgs e)
at System.Windows.Forms.ComboBox.WmReflectCommand(Message& m)
at System.Windows.Forms.ComboBox.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

5