Fix NameError import

core_utils/core_model_loaders.py

@@ -1,7 +1,8 @@
 # D:\jan-contract\core_utils\core_model_loaders.py
 
 import os
-from langchain_google_genai import GoogleGenerativeAIEmbeddings
+from langchain_google_genai import GoogleGenerativeAIEmbeddings, ChatGoogleGenerativeAI
+from langchain_groq import ChatGroq
 
 def load_embedding_model():
     """Loads the embedding model without any Streamlit dependencies or heavy local models."""