When i open DNNChat module this error appear to me:
Error: DnnChat is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Security.PortalSecurity.Encrypt(String key, String data) at Christoc.Modules.DnnChat.View.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---
any help please