unity mapping issue - Exception is: InvalidOperationException

See more:

Unity

Resolution of the dependency failed, type = "StudentManagement.IBusiness.ILoggManager", name = "(none)".
Exception occurred while: while resolving.
Exception is: InvalidOperationException - The current type, StudentManagement.IBusiness.ILoggManager, is an interface and cannot be constructed. Are you missing a type mapping?
-----------------------------------------------
At the time of the exception, the container was:

Resolving StudentManagement.IBusiness.ILoggManager,(none)

Any solution to this??
I have provided mapping as and all other mappings are working.

container.RegisterType<iloggmanager,>();