Update app.py

app.py

@@ -59,7 +59,10 @@ def create_retriever_from_chroma(vectorstore_path="./docs/chroma/", search_type=
         docs = loader.load()
         st.write("Docs loaded")
         
-        text_splitter = RecursiveCharacterTextSplitter(chunk_size=chunk_size, chunk_overlap=chunk_overlap,separators=["\n \n \n", "\n \n", "\n1" , "(?<=\. )", " ", ""])
+        text_splitter = RecursiveCharacterTextSplitter.from_tiktoken_encoder(
+        chunk_size=chunk_size, chunk_overlap=chunk_overlap,
+        separators=["\n \n \n", "\n \n", "\n1" , "(?<=\. )", " ", ""]
+    )
         split_docs = text_splitter.split_documents(docs)