Update app.py

app.py

@@ -7,6 +7,7 @@ from langchain.document_loaders import (
     EverNoteLoader,
     PDFMinerLoader,
     UnstructuredPDFLoader,
+    MathpixPDFLoader,
     TextLoader,
     UnstructuredEmailLoader,
     UnstructuredEPubLoader,
@@ -46,7 +47,8 @@ LOADER_MAPPING = {
     ".md": (UnstructuredMarkdownLoader, {}),
     ".odt": (UnstructuredODTLoader, {}),
     #".pdf": (PDFMinerLoader, {}),
-    ".pdf": (UnstructuredPDFLoader, {}),
+    #".pdf": (UnstructuredPDFLoader, {}),
+    ".pdf": (MathpixPDFLoader, {}),
     ".ppt": (UnstructuredPowerPointLoader, {}),
     ".pptx": (UnstructuredPowerPointLoader, {}),
     ".txt": (TextLoader, {"encoding": "utf8"}),