I'm following this guide with a clean project. After clicking "Setup Rivet Modules", the process hangs on "Running". I assume all this does is generate rivet.dev.json and rivet.json. "Reload Current Project" unhangs "Running" as "Completed", but the next Setup button does not activate.

Notably, the console outputs.
Failed to open process 6388: The parameter is incorrect. (0x80070057)
System Info:
Godot v4.3.stable - Windows 10.0.19045 - GLES3 (Compatibility) - NVIDIA GeForce RTX 2060 (NVIDIA; 32.0.15.6094) - Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (8 Threads)