TIDM-02000: Schematic and netlist files cannot be opened in KiCAD

We would like to create a reference design for TIDM-02000.

However, I cannot open the schematic （Schematic Editor）and

netlist（PCB Editor） files in KiCAD.

I would like to know how to solve this problem.

The KiCAD bashon is KiCad 6.0.