Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type Presentation.Internet.FeedBack.FeedBack, Presentation.Internet, Version=1.0.0.0, Culture=neutral, PublicKeyToken=8ecc475e27f13e29 could not be found or it is not registered as safe. Correlation ID: d6a7979f-f450-e0d6-e8cf-cb5b56aa232f.

Error Details:
[UnsafeControlException: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type Presentation.Internet.FeedBack.FeedBack, Presentation.Internet, Version=1.0.0.0, Culture=neutral, PublicKeyToken=8ecc475e27f13e29 could not be found or it is not registered as safe.]
  at Microsoft.SharePoint.ApplicationRuntime.SafeControls.GetTypeFromGuid(Boolean isAppWeb, Guid guid, Guid solutionId, Nullable`1 solutionWebId, String assemblyFullName, String typeFullName, Boolean throwIfNotSafe)
  at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)