Hi Jovvy,
Do you mean that you have 100+ modules in a single application?
It indeed sounds like an error originated because of a circular dependency. I guess the platform is waiting for the producer module of 'ORG_Services' to finish upgrading, but it never finishes because the producer module is also dependent on 'ORG_Services', due to the circular dependency ('ORG_Services' is basically a producer for its own producer). I'm sure OutSystems support can give more detailed info on that.
I suggest you break them down into different applications and resolve circular dependencies, even though it's a tedious task. That would help a lot with future development and reduce the risk of these kinds of publish issues as well.
You can start with module 'ORG_Services', and check if just isolating it will resolve that error. If it does, then maybe you can assume that the circular dependency was causing the error.
There is also a more recent document related to the link you shared, maybe it helps: https://success.outsystems.com/Support/Enterprise_Customers/Upgrading/Possible_errors_related_to_modules_preparation