stringify_keys! destructively converts has keys to strings. You are getting this error because you are passing a string to a function that is expecting a hash. http://api.rubyonrails.com/classes/ActiveSupport/CoreExtensions/Hash/Keys.html
Shandy Nantz wrote:
Sorry for the typo, still haven’t had my first cup of coffee 
stringify_keys! destructively converts hash keys to strings.
William Pratt wrote:
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