fix making dir

app.py

@@ -63,6 +63,12 @@ def clear_old_files(dir,passed_time):
 
 def process_images(normal_image,mouth_open_image,eye_close_image,duration=100,pattern = "nnnmmmnenmmmnnnmmmnnnmmmnnnmmm",looping = True):
     # validating images
+    
+    # cache control
+    if not os.path.exists(output_dir):
+        os.mkdir(output_dir)
+    clear_old_files(output_dir,passed_time)
+    
     if normal_image is None or mouth_open_image is None or eye_close_image is None:
          raise gr.Error("Need Normal Mouth Eyes 3 images")
     #validate check
@@ -108,7 +114,7 @@ def process_images(normal_image,mouth_open_image,eye_close_image,duration=100,pa
     hex_dig = hash_object.hexdigest()
     unique_id = hex_dig[:32]
 
-    clear_old_files(output_dir,passed_time)
+    
     output_path = f"{output_dir}/{unique_id}.webp"
     with open(output_path,"wb") as f:
          f.write(output_buffer.getvalue())