If folder exists, os will not try to create dir.

commands/eval.go

@@ -16,12 +16,17 @@ import (
 // EvalCommand is a handler for eval command
 func EvalCommand(ctx CommandHandler.Context, _ []string) error {
 	uuidvar := uuid.New()
-	err := os.Mkdir("./evals", os.ModeDevice)
+	_, err := os.Stat("./evals")
+	if os.IsNotExist(err) {
+		err = os.Mkdir("./evals", os.ModeDevice)
 		if err != nil {
 			ctx.Reply("Error while creating evals folder")
 			time.Sleep(1 * time.Second)
 			ctx.Reply(err.Error())
+			return nil
+		}
 	}
+
 	_, err = os.Create(fmt.Sprintf("./evals/%s.go", uuidvar))
 	if err != nil {
 		ctx.Reply("Error while creating file..")