Update app.py

app.py

@@ -4,6 +4,10 @@ from multit2i import (load_models, infer_fn, infer_rand_fn, save_gallery,
     change_model, warm_model, get_model_info_md, loaded_models,
     get_positive_prefix, get_positive_suffix, get_negative_prefix, get_negative_suffix,
     get_recom_prompt_type, set_recom_prompt_preset, get_tag_type, randomize_seed, translate_to_en)
+from externalmod import gr_Interface_load
+from threading import RLock
+lock = RLock()
+HF_TOKEN = os.environ.get("HF_TOKEN") if os.environ.get("HF_TOKEN") else None # If private or gated models aren't used, ENV setting is unnecessary.
 
 max_images = 8
 MAX_SEED = 2**32-1