Update app.py

app.py

@@ -3134,7 +3134,7 @@ def create_app():
                 api_key_override = together_api_key
             elif provider == "Anthropic" and anthropic_api_key:
                 api_key_override = anthropic_api_key
-            elif provider_choice == "Poe" and poe_api_key:
+            elif provider == "Poe" and poe_api_key:
                 api_key_override = poe_api_key
             elif provider == "GoogleAI" and googleai_api_key:
                 api_key_override = googleai_api_key