Exoprimal will not start

**Game information**
Exoprimal

**Distribution name and version where applicable**
Void Linux.

**Flatpak info**
Flatpak 1.15.6
nvidia-550-54-14
default
host

**Problem description**
The game Exoprimal will refuse to launch with any Proton Version I've selected. All I get is a pop-up with the name: "Easy Anti-Cheat Launch Error" which says: "Failed to initialize dependencies."

**Does this issue reproduce with native Steam**
No. The game runs fine with native Steam.