ActionDispatch::Http::Parameters::ParseError Ruby on Rails 5.1.2 Class ActionDispatch::Http::Parameters::ParseError < StandardError actionpack/lib/action_dispatch/http/parameters.rb Raised when raw data from the request cannot be parsed by the parser defined for request's content mime type. Methods N new Class Public methods new() Link Source: show | on GitHub # File actionpack/lib/action_dispatch/http/parameters.rb, line 18 def initialize super($!.message) end