System.FormatException HResult=0x80131537 Message=Input string was not in a correct format.

Question

System.FormatException
  HResult=0x80131537
  Message=Input string was not in a correct format.
  Source=System.Private.CoreLib
  StackTrace:
   at System.DateTimeFormat.GetRealFormat(ReadOnlySpan`1 format, DateTimeFormatInfo dtfi)
   at System.DateTimeFormat.ExpandPredefinedFormat(ReadOnlySpan`1 format, DateTime& dateTime, DateTimeFormatInfo& dtfi, TimeSpan offset)
   at System.DateTimeFormat.FormatStringBuilder(DateTime dateTime, ReadOnlySpan`1 format, DateTimeFormatInfo dtfi, TimeSpan offset, ValueStringBuilder& result)
   at System.DateTimeFormat.Format(DateTime dateTime, String format, IFormatProvider provider, TimeSpan offset)
   at System.Windows.Forms.DateTimePicker.get_Text()
   at System.Windows.Forms.DateTimePicker.set_Value(DateTime value)
   at Vedavaaag.SBI_CSP_CREATION.LoadAndMapDataControlsIfAnotherUserUPdated()
   at Vedavaaag.SBI_CSP_CREATION.SBI_CSP_CREATION_Load(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, WM msg, IntPtr wparam, IntPtr lparam)