Hey, thanks for the heads up! I recompressed and reuploaded the executables. I tested it on one different computer than mine, and it seems to be running it okay. Let me know if the problem persists, but hopefully, it won't.
I have to be honest, your analysis of the situation is 100% correct. I forgot to include .pck file in the zip the first time around. To be fair, it was our first time publishing a game made in Godot, so mistakes like these were almost inevitable.