Getting uninitialized constant Mail::Parsers::AddressListsParser::AddressStruct

[alextakitani]

I'm saving serialized mail objects and later Marshal loading

This used to work for years, now I'm getting this error:

uninitialized constant Mail::Parsers::AddressListsParser::AddressStruct

It worked for a few days after adding

require "mail/parsers/content_type_parser" require 'mail/parsers/address_lists_parser'

But now is erroring again.

I've tried to add an initializer with Mail.eager_autoload! as suggested on another issue but with no success.

Anything else I can try?

Thanks!