Getting warning with getText()

[vijuc895]

Hello @JorjMcKie,

I am getting warning with getText() for one of my pdf, the warning is mupdf: zlib error: incorrect header check. and instead of text I am getting '��� ����� ���� ���\n whereas when I open this pdf in any browser and try to select the text and copy it then I am getting proper text.

[JorjMcKie]

Re-submit with reproducible data and all the rest of mandatory information

[JorjMcKie]

Probably duplicate of #869 anyway.
The zlib warnings indicate document damage.

Please also see here.