Update app.py

app.py

@@ -94,19 +94,12 @@ for doc in data:
 
 # Create a Chroma vector store using the document splits.
 persist_directory = "./chroma_db"
-if os.path.exists(persist_directory) and os.listdir(persist_directory):
-    vectorstore = Chroma(
-        persist_directory=persist_directory,
-        embedding_function=OpenAIEmbeddings()
-    )
-    print("Loaded vector store from persist directory.")
-else:
-    vectorstore = Chroma.from_documents(
-        documents=all_splits, 
-        embedding=OpenAIEmbeddings(), 
-        persist_directory=persist_directory
-    )
-    print("Created new vector store and persisted embeddings.")
+vectorstore = Chroma.from_documents(
+    documents=all_splits, 
+    embedding=OpenAIEmbeddings(), 
+    persist_directory=persist_directory
+)
+print("Created new vector store and persisted embeddings.")
 
 # Create a BM25 retriever from the document splits.
 bm25_retriever = BM25Retriever.from_documents(all_splits, search_kwargs={"k": 5})