Update app.py

app.py

@@ -5,10 +5,7 @@ import requests
 from datetime import datetime
 from langchain_openai import ChatOpenAI
 from langchain_anthropic import ChatAnthropic
-from langchain_google_genai import ChatGoogleGenerativeAI
 from langchain_core.messages import HumanMessage
-from langchain_core.caches import BaseCache
-ChatGoogleGenerativeAI.model_rebuild()
 import PyPDF2
 import docx
 import pandas as pd
@@ -18,6 +15,15 @@ import tempfile
 from urllib.parse import urlparse
 import re
 
+# Import et rebuild de ChatGoogleGenerativeAI en différé
+try:
+    from langchain_google_genai import ChatGoogleGenerativeAI
+    from langchain_core.caches import BaseCache
+    ChatGoogleGenerativeAI.model_rebuild()
+except Exception as e:
+    print(f"Avertissement lors du rebuild: {e}")
+    from langchain_google_genai import ChatGoogleGenerativeAI
+
 # Configuration des modèles
 MODELS = {
     "Gemini 2.5 Flash (Google AI)": {