Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: Cannot perform runtime binding on a null reference
   at CallSite.Target(Closure, CallSite, Object, String)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute2[T0,T1,TRet](CallSite site, T0 arg0, T1 arg1)
   at DBMR_WEB.Controllers.CludDatabaseController.nucleusDetailsAsync(String url) in C:\Users\Parasharam Sawant\source\repos\dbmrGit\DBMR-WEB_new_design\DBMR-WEB\Controllers\CludDatabaseController.cs:line 245