title: Sporadic "an interface and cannot be constructed. Are you missing a type mapping"
body: <p>Initial deployment of the site works fine.  After about 2-3 hours, the controllers suddenly cannot be instantiated due to a dependency cannot be resolved (or at least that's what the error message tells me).</p>
  
  <p>I have tried various things, but none of which seem to resolve it.  Does anyone have any ideas what I can check?</p>