Update app.py

app.py

@@ -67,7 +67,7 @@ def invoke(openai_api_key, use_rag, prompt):
                                                        chunk_size = 1500)
         splits = text_splitter.split_documents(docs)
         vector_db = Chroma.from_documents(documents = splits, 
-                                          embedding = OpenAIEmbeddings(), 
+                                          embedding = OpenAIEmbeddings(disallowed_special = ()), 
                                           persist_directory = CHROMA_DIR)
         # Document retrieval
         vector_db = Chroma(embedding_function = OpenAIEmbeddings(),