class ActionDispatch::ParamsParser::ParseError

defined for request’s content mime type.
Raised when raw data from the request cannot be parsed by the parser

def initialize(message = nil, original_exception = nil) 

def initialize(message = nil, original_exception = nil)
  if message
    ActiveSupport::Deprecation.warn("Passing #message is deprecated and has no effect. " \
                                    "#{self.class} will automatically capture the message " \
                                    "of the original exception.", caller)
  end
  if original_exception
    ActiveSupport::Deprecation.warn("Passing #original_exception is deprecated and has no effect. " \
                                    "Exceptions will automatically capture the original exception.", caller)
  end
  super($!.message)
end

def original_exception 

def original_exception
  ActiveSupport::Deprecation.warn("#original_exception is deprecated. Use #cause instead.", caller)
  cause
end