While going to play through one of my recently-edited maps to see if it's more accurate to what I want to portray, this error came up on the screen. Pressing space or clicking on it allows me to continue playtesting the game, but it continues to pop up. I believe that the reason for this is because Cancel2 and a few other files might be missing from my Sound Effects folder. I'm not sure if I have any events that use the Cancel2 sound effect in the game as of yet, but I want to get this fixed as soon as possible. Is there maybe a place for me to download files missing from the Sound Effects folder to fix this problem, or do I have to uninstall and re-install RPG Maker MV? The reason why they're missing is probably because I deleted them. I don't know what .ogg files do or did, but I'm assuming that they have to do with playback or something of the sort. I was deleting them because I thought they were scrap data or something, I don't know. What importance do .ogg files have when it comes to Sound Effects?