Exception : System.NullReferenceException: Object reference not set to an instance of an object. at Allotment.RegistrationLogistics.Decrypt(String cipherText) in C:\2024\Feb 2024\14 02 23\Allotment - live -21Dec2023\Allotment\RegistrationLogistics.aspx.cs:line 247 at Allotment.RegistrationLogistics.Page_Load(Object sender, EventArgs e) in C:\2024\Feb 2024\14 02 23\Allotment - live -21Dec2023\Allotment\RegistrationLogistics.aspx.cs:line 47