Rails 5 Upgrade: No such middleware to insert after: ActionDispatch::ParamsParser (RuntimeError) Rails 5 Upgrade: No such middleware to insert after: ActionDispatch::ParamsParser (RuntimeError) ruby ruby

Rails 5 Upgrade: No such middleware to insert after: ActionDispatch::ParamsParser (RuntimeError)


I believe this error was caused by a gem that has not been updated yet for Rails 5. I had been using the gem remotipart (https://github.com/JangoSteve/remotipart). It has been very helpful. When I remove it from the gem file, the error noted in the question goes away.