fix

app.py

@@ -5,7 +5,6 @@ from dotenv import load_dotenv
 from transformers import logging
 
 from langgraph.checkpoint.memory import MemorySaver
-# from langchain_community.chat_models import ChatOpenRouter
 from langchain_openai import ChatOpenAI
 
 from interface import create_demo
@@ -15,7 +14,20 @@ from medrax.utils import *
 
 warnings.filterwarnings("ignore")
 logging.set_verbosity_error()
-_ = load_dotenv()
+load_dotenv()  # Remove the _ = assignment to ensure it's properly loaded
+
+# Set environment variables explicitly to ensure they're available
+api_key = os.getenv("OPENAI_API_KEY")
+base_url = os.getenv("OPENAI_BASE_URL")
+
+if not api_key:
+    raise ValueError("OPENAI_API_KEY not found in environment variables")
+if not base_url:
+    raise ValueError("OPENAI_BASE_URL not found in environment variables")
+
+# Set them in environment for libraries that might read directly from os.environ
+os.environ["OPENAI_API_KEY"] = api_key
+os.environ["OPENAI_BASE_URL"] = base_url
 
 def initialize_agent(
     prompt_file,
@@ -57,10 +69,12 @@ def initialize_agent(
             tools_dict[tool_name] = all_tools[tool_name]()
 
     checkpointer = MemorySaver()
+    
+    # Explicitly pass the API key and base URL
     model = ChatOpenAI(
-        model_name=model,  # "google/gemini-2.5-pro-exp-03-25:free"
-        api_key=os.getenv("OPENAI_API_KEY"),
-        base_url=os.getenv("OPENAI_BASE_URL"),
+        model_name=model,
+        api_key=api_key,
+        base_url=base_url,
         temperature=temperature,
         top_p=top_p,
     )
@@ -105,4 +119,4 @@ if __name__ == "__main__":
     )
 
     demo = create_demo(agent, tools_dict)
-    demo.launch(server_name="0.0.0.0", server_port=8585, share=True)
+    demo.launch(server_name="0.0.0.0", server_port=8585, share=True)