Display sound error codes (Patreon)

When the voice sounds are played in the game, I specify the type of sound in the program, but there are hundreds of files, so I often mistake the name. So far, if I mistook, it just wouldn't play and I couldn't notice the bugs. This time, I added a function to display an error code when non-existent sound names are specified.

And this sound will be played at the same time.

Of course, this is just a useless feature to you and annoying when it works, but I'll thank you for your cooperation If you encounter this problem and report the code to me. It'll be added in the next version.