HasanMerkit yes best course of action is probably to wait for this extension to support the latest Blogs version.
Not sure what @askvortsov has planned, he might not have been aware a new major version of Blogs was released.
It's also possible that the Blogs version 0.5 does not actually contain any broken change from 0.4, but from a semantic versioning standpoint this is a major update so the Article Series extension requires at least one line change and probably a test to verify it still works.
The Flarum version itself doesn't play a role here, it's all related to the cross-requirements between the 2 extensions.
