Updated app.py

app.py

@@ -26,11 +26,11 @@ uploaded_file = st.file_uploader("Choose a PDF file", type=["pdf"])
 embed_model_uae = HuggingFaceEmbedding(model_name="WhereIsAI/UAE-Large-V1")
 service_context = ServiceContext.from_defaults(llm=llm, chunk_size=800, chunk_overlap=20, embed_model=embed_model_uae)
 
-
-file_contents = read_pdf(uploaded_file)
-documents = Document(text=file_contents)
-documents = [documents]
-st.success("Documents loaded successfully!")
+if uploaded_file is not None:
+    file_contents = read_pdf(uploaded_file)
+    documents = Document(text=file_contents)
+    documents = [documents]
+    st.success("Documents loaded successfully!")
 
 # Indexing the documents
 progress_container = st.empty()