Ascension paths (Psionic, Synthetic, Genetic, and Cybernetic) were reworked into full Tradition trees rather than just a pair of perks.
If your query is about how to get the file working, please be aware of the following: File: Stellaris.v3.6.0.Incl.ALL.DLC.zip ...
Saves from version 3.5 or earlier are generally not compatible with 3.6 due to the massive changes in ship logic and traditions. Ascension paths (Psionic