Update app.py

app.py

@@ -51,7 +51,7 @@ def process_file(file: AskFileResponse):
 
     with tempfile.NamedTemporaryFile(mode="w", delete=False) as tempfile:
         with open(tempfile.name, "wb") as f:
-            with open(file.path, "r") as sourcefile:
+            with open(file.path, "rb") as sourcefile:
                 # Read the contents of the file
                 content = sourcefile.read()
                 f.write(file.content)