I have an application with multiple models that works perfectly fine in
both development and production.
Now I added yet another model & database table 'Cluster' - no
fundamental difference to the other models I added before.
All calls to this model from the regular application on the production
such as 'Cluster.find(:last)' - or any other request that you could
think of that involves Cluster or clusters - result in:
undefined method `find' for Cluster:Module