Update app.py

app.py

@@ -14,7 +14,7 @@ from langchain.callbacks import get_openai_callback
 from io import BytesIO
 from langchain.chains.combine_documents import create_stuff_documents_chain
 from langchain_core.prompts import ChatPromptTemplate
-from chromadb.config import Settings
+import chromadb
 
 openai.api_key = os.getenv("OPENAI_API_KEY")
 
@@ -32,12 +32,12 @@ def process_pdf(uploaded_file):
 
 def create_vectorstore(splits):
     embeddings = OpenAIEmbeddings()
+    client = chromadb.Client()
+
     vectorstore = Chroma.from_documents(
-        splits, 
-        embeddings, 
-        client_settings=Settings(
-            chroma_db_impl="duckdb+parquet"
-        )
+        splits,
+        embeddings,
+        client=client
     )
     retriever = vectorstore.as_retriever()
     return retriever