Fix crash when ./persist directory exists and tries to be recreated

src/utils/functions.ts

@@ -14,7 +14,7 @@ export function checkFile(
 
     final = !data.toString().trim() ? [] : JSON.parse(data.toString());
   } else {
-    fs.mkdirSync(dir);
+    !fs.existsSync(dir) && fs.mkdirSync(dir);
     fs.createWriteStream(fullPath);
     final = [];
   }