Update app.py

app.py

@@ -33,12 +33,11 @@ st.session_state['API_Key']= st.text_input("First, to get it work, put your Open
 # uploaded_file = st.sidebar.file_uploader("upload", type="csv")
 
 persist_directory = "chroma/db"
-embeddings = OpenAIEmbeddings()
-KaggleX_courses_db = Chroma(persist_directory = persist_directory, embedding_function=embeddings)
 
 
-
-if KaggleX_courses_db :
+if persist_directory :
+    embeddings = OpenAIEmbeddings()
+    KaggleX_courses_db = Chroma(persist_directory = persist_directory, embedding_function=embeddings)
 
     KaggleX_courses_db = Chroma(persist_directory = persist_directory, embedding_function=embeddings)
     retriever = KaggleX_courses_db.as_retriever() # search_kwargs={"k": 4}