Update inference_manager.py

inference_manager.py

@@ -325,7 +325,7 @@ class ModelManager:
             print(f"Building pipeline with LoRAs for model {model_id}...")
             return model.build_pipeline_with_lora(lora_list, sampler, new_pipeline)
         except Exception as e:
-            traceback.print_exc()
+            print(traceback.format_exc())
             print(f"Failed to build pipeline for model {model_id}: {e}")
             return None