Update app.py

app.py

@@ -69,14 +69,18 @@ def extract_text_markdown(doc, image_paths, page_index, seen_xrefs):
 @spaces.GPU
 def convert(pdf_bytes):
     # Si no se recibe ningún PDF, se usa uno por defecto.
+    # La siguiente cadena Base64 representa un PDF minimalista que contiene el texto "Default PDF content"
     if not pdf_bytes:
         default_pdf_base64 = (
-            "JVBERi0xLjQKMSAwIG9iago8PC9UeXBlIC9DYXRhbG9nIC9QYWdlcyAyIDAgUgovUHJvY1NldFsvUERGXQ+Pgpl"
-            "bmRvYmoKMiAwIG9iago8PC9UeXBlIC9QYWdlcyAvS2lkcyBbMyAwIFJdIC9Db3VudCAxPj4KZW5kb2JqCgozIDAg"
-            "b2JqCjw8L1R5cGUgL1BhZ2UgL1BhZ2VzIDIgMCBSIC9NZWRpYUJveCBbMCAwIDYxMiA3OTJdCi9Db250ZW50cyA0"
-            "IDAgUiA+PgplbmRvYmoK"
+            "JVBERi0xLjQKMSAwIG9iago8PC9UeXBlIC9DYXRhbG9nIC9QYWdlcyAyIDAgUgovT3V0cHV0cyA8PC9Qcm9jU2V0"
+            "Wy9QREZdPj4+CmVuZG9iagoKMiAwIG9iago8PC9UeXBlIC9QYWdlcyAvS2lkcyBbMyAwIFJdIC9Db3VudCAxPj4K"
+            "ZW5kb2JqCgozIDAgb2JqCjw8L1R5cGUgL1BhZ2UKL1BhZ2VzIDIgMCBSIC9NZWRpYUJveCBbMCAwIDMwIDE0NF0g"
+            "L0NvbnRlbnRzIDQgMCBSPj4KZW5kb2JqCgo0IDAgb2JqCjw8L0xlbmd0aCA1NT4+c3RyZWFtCkJUCjcwIDEwMCBU"
+            "ZApGMSAxMiBUZgooKERlZmF1bHQgUERGIFRleHQgY29udGVudCkgVGoKVEkKVEUKRW5kc3RyZWFtCmVuZG9iagox"
+            "IDAgb2JqCjw8L1R5cGUgL0NhdGFsb2cgL1BhZ2VzIDIgMCBSPj4KZW5kb2JqCnRyYWlsZXIKPDwvU3RyaW5ncyA8"
+            "PC9TdHJpbmdzIDYgMCBSPj4KPGRyZWYKMCAxMDAKPj4KZW5kdHJlYWxlcgo="
         )
-        # Añadir relleno si es necesario:
+        # Añadimos relleno si fuese necesario
         missing_padding = len(default_pdf_base64) % 4
         if missing_padding:
             default_pdf_base64 += "=" * (4 - missing_padding)