"The Save file was not found", in Uncle's Save and Load Example.

[LOOPERION]

So I was using @Uncle 's "Save and Load Example" since I only need a basic save and load system for two integers, the problem is it shows "The Save file was not found.", How do I fix it? t was fiddling with it the sample map, and it works but the moment I copy-paste it to other map, it shows that error.