uninitialized constant Dragonfly::Server::Serializer

Getting this error on server

NameError

uninitialized constant Dragonfly::Server::Serializer

Using debian+passenger+apache+Rails 3.2 + ruby 1.9.3

Solution

Got the solution a restart of server or server reset fixed the problem

If any one gets this problem make sure the engine loads while starting server or you can add require to application.rb

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