Update telegram_bot.py

telegram_bot.py

@@ -5,8 +5,7 @@ from dotenv import load_dotenv
 from telegram import Update, ReplyKeyboardMarkup, ReplyKeyboardRemove
 import datetime
 from telegram.ext import Application, CommandHandler, MessageHandler, filters, ContextTypes, ConversationHandler
-# NEW IMPORT: Necessary to explicitly configure the request object
-from telegram.request import HTTPXRequest 
+# Removed: from telegram.request import HTTPXRequest 
 import logging
 
 # Using the dedicated packages as recommended by LangChain warnings
@@ -43,6 +42,7 @@ class TelegramHomeopathyBot:
             # Explicitly set device to 'cpu' for memory constrained environments
             model_kwargs={'device': 'cpu'} 
         )
+        # Using a reliable embedding function is critical for RAG performance 
         self.vector_store = Chroma(
             persist_directory="./vector_db",
             embedding_function=self.embeddings
@@ -378,18 +378,14 @@ def main():
     
     print("🚀 Starting Telegram Homeopathy Bot...")
     
-    # NEW: Explicitly configure the request object to use the correct base URL
-    # This often bypasses environmental DNS resolution failures.
-    custom_request = HTTPXRequest(
-        base_url='https://api.telegram.org/bot'
-    )
+    # 🚨 FIX: Reverting to the standard Application.builder() to avoid the HTTPXRequest TypeError.
+    # The application will now use default request settings, which should work if the DNS issue is resolved.
     
     # Create Application
     application = (
         Application.builder()
         .token(TELEGRAM_TOKEN)
-        .request(custom_request) # Inject the custom request object
-        .build()
+        .build() # Removed the custom request object injection
     )
     
     # Add conversation handler
@@ -421,4 +417,5 @@ def main():
 
 if __name__ == '__main__':
     # Ensure all initialization warnings are visible before starting the main loop
-    main()
+    main()
+