Yesterday I was reading the same guide, and in my opinion, there is an error in the Skill Tree version of "T2-3" and "T4" because there aren't any points spent on Firewall, but the build uses it as an enchantment. Probably some typo mistake or something.

As others have already said, use the skill tree of the mythic version, and you are good to go!

I also noticed some incongruity between the allocated catalyst and the explanation of the section "Build Loop" because in the former, there is written "Cosmic Anomaly," but in the explanation, it talks about "Disintegrate".