Update app.py

app.py

@@ -33,7 +33,7 @@ def retriever_from_chroma(docs, search_type, k):
     if not os.path.exists(vectorstore_path):
         os.makedirs(vectorstore_path)
     vectorstore = Chroma.from_documents(
-        documents=text_chunks, embedding=embeddings, persist_directory="docs/chroma/")
+        documents=docs, embedding=embeddings, persist_directory="docs/chroma/")
     retriever = vectordb.as_retriever(search_type=search_type, search_kwargs={"k": k})
     return retriever