"fitz.mupdf.FzErrorArgument: code=4: source object number out of range" after "add_redact_annot" about pymupdf HOT 3 CLOSED

import fitz, sys

src = fitz.open(sys.argv[1])
doc = fitz.open()
for spage in src:
    redact_area = fitz.Rect(100, 100, 200, 200)
    spage.add_redact_annot(redact_area)
    spage.apply_redactions()  # clears areas to exclude

for spage in src:
    w, h = spage.rect.br
    page = doc.new_page(width=w, height=h)
    page.show_pdf_page(page.rect, src, spage.number, clip=spage.rect)

doc.ez_save(src.name.replace(".pdf", "-redacted.pdf"), garbage=4)