Update app.py

app.py

@@ -19,7 +19,14 @@ from langchain.document_loaders import (
     UnstructuredPDFLoader,
     UnstructuredWordDocumentLoader,
     WebBaseLoader,
-    PyPDFLoader
+    PyPDFLoader,
+    UnstructuredMarkdownLoader,
+    UnstructuredEPubLoader,
+    UnstructuredHTMLLoader,
+    UnstructuredPowerPointLoader,
+    UnstructuredODTLoader,
+    NotebookLoader
+
 )
 from transformers import (
     AutoModelForCausalLM,