Update app.py

app.py

@@ -103,7 +103,7 @@ def document_retrieval_chroma(llm, prompt):
     #embeddings = HuggingFaceInstructEmbeddings(model_name="sentence-transformers/all-MiniLM-L6-v2", model_kwargs={"device": "cpu"})
     db = Chroma(embedding_function = embeddings,
                 #persist_directory = CHROMA_DIR)
-                persist_directory = path_work + '/chroma')
+                persist_directory = PATH_WORK + '/chroma')
     
     return db