Updated code

utils.py

@@ -286,10 +286,10 @@ def load_retriver(chroma_vectorstore):
     return compression_retriever
 
 
-def load_retriver(text_chunks, embeddings, chroma_vectorstore):
+def load_retriver(chroma_vectorstore):
     """Load cohere rerank method for retrieval"""
-    bm25_retriever = BM25Retriever.from_documents(text_chunks)
-    bm25_retriever.k = 2
+    # bm25_retriever = BM25Retriever.from_documents(text_chunks)
+    # bm25_retriever.k = 2
     chroma_retriever = chroma_vectorstore.as_retriever(search_kwargs={"k": 3})  
     # ensemble_retriever = EnsembleRetriever(retrievers=[bm25_retriever, chroma_retriever], weights=[0.3, 0.7])
     logging.basicConfig()