╭∩╮( •̀_•́ )╭∩╮

src/app/events/gm/GmTileUpload.ts

@@ -32,7 +32,7 @@ export default function (socket: TSocket, io: Server) {
         for (const key in data) {
             // the files in the folder are named 0.png, 1.png, 2.png etc... check the last file name and add 1
             const files = fs.readdirSync(public_folder);
-            const lastFile = files.reduce((a, b) => a > b ? a : b);
+            const lastFile = files.reduce((a, b) => a > b ? a : b, '0.png');
             const lastFileName = lastFile?.split('.')[0];
             const filename = `${parseInt(lastFileName ?? '0') + 1}.png`;
             const finalFilePath = path.join(public_folder, filename);