After resolving error, Sample Example for PowerBIEmbedded_Appownsdata is working fine I can See my dashboard from Clicking Button but When Copied same code with reqired correction and added all required references and <appSetting> in web.config but when I run that code on my DNN website it gives me below error, which I am not sure what is messing but I think Its not connected properly with web.config means there some confugration step is messing which is not mention. For Controller and services I copied the same code as sample example of powerBI.
DotNetNuke.Services.Exceptions.ModuleLoadException: An error occurred when trying to create a controller of type. Make sure that the controller has a parameterless public constructor. ---> System.InvalidOperationException: An error occurred when trying to create a controller of type. Make sure that the controller has a parameterless public constructor. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for '/Services.EmbedService' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object. at /Services.EmbedService..cctor() in - End of inner exception stack trace --- at Services.EmbedService..ctor() at End of inner exception stack trace --- at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) at