Update app.py

app.py

@@ -84,7 +84,7 @@ def get_conversational_chain():
         input_variables=["summaries", "question"],
     )
 
-    model = ChatGoogleGenerativeAI(model="gemini-2.5-pro", client=genai, temperature=0.3)
+    model = ChatGoogleGenerativeAI(model="gemini-1.5-flash", client=genai, temperature=0.3)
 
     # LLMChain ها
     map_llm_chain = LLMChain(llm=model, prompt=map_prompt_tmpl)           # expects: context, question