I can't upload images to the page. What is the reason?
For some reason, the group write bit for the directory was off. This matters, because I recently changed the owner of everything to chessvariants, but php runs as apache. I checked the script, and it does "chmod 0775" on a new directory. So, I don't know how it happened. I tested one of my own directories with the same problem. After turning the group write bit on, I was able to upload files to it. I also tested a file with the same name as the one you tried to upload. It uploaded as 001.png, because the Korean characters were ignored. So, you should avoid using Korean letters in file names.
For some reason, the group write bit for the directory was off. This matters, because I recently changed the owner of everything to chessvariants, but php runs as apache. I checked the script, and it does "chmod 0775" on a new directory. So, I don't know how it happened. I tested one of my own directories with the same problem. After turning the group write bit on, I was able to upload files to it. I also tested a file with the same name as the one you tried to upload. It uploaded as 001.png, because the Korean characters were ignored. So, you should avoid using Korean letters in file names.