Thank you. I already did what you said and can get through the problemThis error is a bug from the 1.0 version, it's a known issue that was fixed after in 1.2 (or 1.3 not sure).
What @ments means by unpacking is using a tool like this one:You must be registered to see the links(thnaks to @mayaktheunholy) to unpack the .rgss3a file. You'll then have a "Graphics" and a "Data" folder. Put it in your game folder, rename the "Game.rgss3a" to "Game.rgss3aBACKUP" (don't delete it in case you mess up something, if you have an issue, simply rename the file to its original name)
When you have done that, you have an unpacked version. Do what @ments said then.
But after I did it, the next problem is it keep occur unable to find a file
I did it 2-3times also