Update app.py

app.py

@@ -231,7 +231,7 @@ def pdf2txt(docs):
             elif file_extension.lower() == 'pdf':
                 from PyPDF2 import PdfReader
                 pdf = PdfReader(BytesIO(file.getvalue()))
-                for page in range(len(reader.pages)):
+                for page in range(len(pdf.pages)):
                     text += pdf.getPage(page).extractText()
         except Exception as e:
             st.write(f"Error processing file {file.name}: {e}")