Error in the application

Hi, I'm getting the following error in password manager as "Event ID- 0"

When you browse to the site you get the following :-

Error in the application

System error occured. For more information, view the event log.

When I look at the event log it displays this :-

Result: CriticalError
Info:
System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: Resolution of the dependency failed, type = "QPM.Service.Services.UserService", name = "(none)".
Exception occurred while: Calling constructor QPM.Service.Services.UserService(QPM.Service.Interfaces.Storages.IStorageManager storageManager, QPM.Service.Interfaces.IDirectoryManager directoryManager, QPM.Service.Interfaces.Notifications.INotificationManager notificationManager, QPM.Service.Interfaces.IPolicyManager policyManager, QPM.Service.Interfaces.Defender.IDefenderAuthenticator defenderAuthenticator, QPM.Service.Interfaces.IRegistry registry).
Exception is: NullReferenceException - Object reference not set to an instance of an object.
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At the time of the exception, the container was:

Resolving QPM.Service.Services.UserService,(none)
Calling constructor QPM.Service.Services.UserService(QPM.Service.Interfaces.Storages.IStorageManager storageManager, QPM.Service.Interfaces.IDirectoryManager directoryManager, QPM.Service.Interfaces.Notifications.INo... (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "QPM.Service.Services.UserService", name = "(none)".
Exception occurred while: Calling constructor QPM.Service.Services.UserService(QPM.Service.Interfaces.Storages.IStorageManager storageManager, QPM.Service.Interfaces.IDirectoryManager directoryManager, QPM.Service.Interfaces.Notifications.INotificationManager notificationManager, QPM.Service.Interfaces.IPolicyManager policyManager, QPM.Service.Interfaces.Defender.IDefenderAuthenticator defenderAuthenticator, QPM.Service.Interfaces.IRegistry registry).
Exception is: NullReferenceException - Object reference not set to an instance of an object.
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At the time of the exception, the container was:

Resolving QPM.Service.Services.UserService,(none)
Calling constructor QPM.Service.Services.UserService(QPM.Service.Interfa...).