An exception of type 'EPiServer.Framework.Initialization.InitializationException' occurred in EPiServer.Framework.dll but was not handled in user code
Additional information: Initialize action failed for Initialize on class EPiServer.Data.DataInitialization, EPiServer.Data, Version=10.10.3.0, Culture=neutral, PublicKeyToken=8fe83dea738b45b7
This error indicates that there is a problem during initialization. It may be the code cannot accept data from the database.
To identify the cause turn on Log4net logging and troubleshoot the errors there.