Update routes/recommend.py

routes/recommend.py

@@ -315,4 +315,8 @@ def recommend_book():
         except requests.exceptions.Timeout:
             return jsonify({"error": f"{rec_type} service timeout"}), 504
         except requests.exceptions.RequestException as e:
-            return jsonify({"error": f"Failed to connect to {rec_type} service", "details": str(e)}), 503
+            return jsonify({"error": f"Failed to connect to {rec_type} service", "details": str(e)}), 503
+
+    except Exception as e:
+        print(f"Recommend error: {e}")
+        return jsonify({"error": "Internal server error"}), 500