Update app.py

app.py

@@ -157,7 +157,7 @@ async def create_upload_file(text_field: str, file: UploadFile = File(...), ocr:
     
     indexing.connect("document_joiner", "document_cleaner")
     indexing.connect("document_cleaner", "document_splitter")
-    indexing.connect("document_splitter", "document_embedder")
+    indexing.connect("document_splitter", "sparse_doc_embedder")
 
     indexing.connect("sparse_doc_embedder", "dense_doc_embedder")
     indexing.connect("dense_doc_embedder", "writer")