<fix> fix a bug.

app.py

@@ -45,9 +45,6 @@ there's no need to manually input edge maps, depth maps, or other condition imag
 The corresponding condition images will be automatically extracted.
 """
 
-global pipe, current_task
-pipe = None
-current_task = None
 
 def init_basemodel():
     global transformer, scheduler, vae, text_encoder, text_encoder_2, tokenizer, tokenizer_2, image_processor
@@ -321,5 +318,8 @@ def create_app():
 
 
 if __name__ == "__main__":
+    global pipe, current_task
+    pipe = None
+    current_task = None
     init_basemodel()
     create_app().launch(debug=True, ssr_mode=False)