HTTP Error 500.19 - Internal Server Error

Question

I am trying to host my website on smarter asp.net nad I got this error in the link which means 

Cannot read configuration file   even I set up the connection strinf as below 

 http://project216-001-site1.dtempurl.com/ 

 

 

 <add name="ConnectionString" connectionString="Data Source=SQL5030.Smarterasp.net;Initial Catalog=DB_A09688_project216;User Id=DB_A09688_project216_admin;Password=xxxxxx; " providerName="sqloledb" />