Update check_app.py

check_app.py

@@ -181,7 +181,7 @@ def create_pipeline_logic(prompt_text, model_name, negative_prompt="",  seed=42,
     config = MODEL_CONFIGS[model_name]
     pipe_class = config["pipeline_class"]
     global pipe
-    if pipe["pipeline_class"] != pipe_class:
+    if "pipeline_class" not in pipe or pipe["pipeline_class"] != pipe_class:
         print(f"NO PIPE. LOADING NEW {model_name}")
         pipe["pipeline_class"] = pipe_class
         b_pipe = AutoPipelineForText2Image.from_pretrained(