This project is too big and complex for me to diagnose by just reading, it would take some effort
take a look at
https://www.routledge.com/Modeling-Software-with-Finite-State-Machines-A-Practical-Approach/Wagner-Schmuki-Wagner-Wolstenholme/p/book/9780367390860# 'Event/Message Driven State Machines' (http://zed.karelia.ru/mmedia/bin/edsm-g2-rev-h.tar.gz) was inspired by this nice book.
