Today in our production environment users are getting error while accessing Media section from left menu and accessing Media from Mark Down and Rich Text editors.

Below is error message

Received an error from the server An error occured

Mapping types: Media -> UserBasic Umbraco.Core.Models.Media -> Umbraco.Web.Models.ContentEditing.UserBasic

Destination path: ContentItemBasic`2.Owner.Owner

Source value: Umbraco.Core.Models.Media

EXCEPTION DETAILS AutoMapper.AutoMapperMappingException:

Mapping types: Media -> UserBasic Umbraco.Core.Models.Media -> Umbraco.Web.Models.ContentEditing.UserBasic

Destination path: ContentItemBasic`2.Owner.Owner

Source value: Umbraco.Core.Models.Media

STACKTRACE at System.Linq.Enumerable.WhereSelectArrayIterator2.MoveNext() at System.Collections.Generic.List1..ctor(IEnumerable1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source) at Umbraco.Web.WebApi.Filters.FilterAllowedOutgoingMediaAttribute.OnActionExecuted(HttpActionExecutedContext actionExecutedContext) at System.Web.Http.Filters.ActionFilterAttribute.OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, CancellationToken cancellationToken) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.

at System.Web.Http.Dispatcher.HttpControllerDispatcher.