error when convert a pdf-Book

[elegantcoin]

I am using Python3 and there is no error when converting small pdfs(10-20pages), but when I convert a book(usually 200 pages+), there are problems.

[damaocode]

I am using Python3 and there is no error when converting small pdfs(10-20pages), but when I convert a book(usually 200 pages+), there are problems.

so your peoblem is ok now?