While service project its throwing error {"the type initializer for 'system.servicemodel.diagnostics.traceutility' threw an exception."}

I am getting  this error 

"The type initializer for 'System.ServiceModel.Diagnostics.TraceUtility' threw an exception."  While calling soap client web service " . Code gets above error when it reached to code    

ServiceReference1.WebservicesSoapClient srv =new  ServiceReference1.WebservicesSoapClient();
-----------------------------------------------This is my app.config--------------
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appsettings>
  </appsettings>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
    <system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="WebservicesSoap">
                    <security mode="Transport" />
                </binding>
                <binding name="WebservicesSoap1" />
            </basicHttpBinding>
        </bindings>
        <client>
            <endpoint address="https://abc/v2/webservices.asmx"
                binding="basicHttpBinding" bindingConfiguration="WebservicesSoap"
                contract="ServiceReference1.WebservicesSoap" name="WebservicesSoap" />
        </client>
      
    </system.serviceModel>
</configuration>


Would some body guid on this ?

I tired editing app.config . there is no much result found on intenrnet