Update app.py

app.py

@@ -20,6 +20,7 @@ import pytz
 from pypdf import PdfReader, PdfWriter
 from pypdf.annotations import Link
 from reportlab.pdfgen import canvas
+from pypdf.generic import Fit
 
 st.set_page_config(layout="wide", initial_sidebar_state="collapsed")
 
@@ -364,8 +365,9 @@ def create_and_link_pdfs(source_pdf="TestSource.pdf", target_pdf="TestTarget.pdf
             writer.add_page(page)
         page = writer.pages[0]
         y_position = 800 - (7 * 20)
-        # Use add_outline_item instead of add_bookmark
-        writer.add_outline_item("Seven Bookmark", 0, dest=page, fit="/XYZ", left=50, top=y_position)
+        # Use Fit object to specify destination
+        fit = Fit(fit_type="/XYZ", fit_args=[50, y_position, 0])
+        writer.add_outline_item("Seven Bookmark", 0, fit=fit)
         with open(pdf_file, "wb") as f:
             writer.write(f)