Add error logging to chat stream

services/rag-api/services/chat.py

@@ -60,6 +60,8 @@ Answer based on the above context:"""
         ],
     }
     
+    logger.info(f"Chat request to {url} with model {model}")
+
     # Yield sources first
     sources = [
         {'title': c.title, 'path': c.path, 'score': c.score}
@@ -68,8 +70,10 @@ Answer based on the above context:"""
     yield f'data: {json.dumps({"type": "sources", "sources": sources})}\n\n'
 
     # Stream tokens
-    async with httpx.AsyncClient(timeout=120.0) as client:
+    try:
+        async with httpx.AsyncClient(timeout=180.0) as client:
             async with client.stream('POST', url, json=payload) as resp:
+                logger.info(f"Ollama response status: {resp.status_code}")
                 resp.raise_for_status()
                 async for line in resp.aiter_lines():
                     if not line.strip():
@@ -83,5 +87,8 @@ Answer based on the above context:"""
                             break
                     except json.JSONDecodeError:
                         continue
+    except Exception as e:
+        logger.error(f"Chat stream error: {e}")
+        yield f'data: {json.dumps({"type": "error", "error": str(e)})}\n\n'
 
     yield f'data: {json.dumps({"type": "done"})}\n\n'