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''AN ERROR EXISTS ON THIS PAGE. ACROBAT MAY NOT DISPLAY PAGE CORRECTLY. PLEASE CONTACT THE PERSON WHO HAS CREATED THE PDF DOCUMENT TO CORRECT THE PROBLEM.''

this error appears when trying to open pdf in Adobe reader but in crome browser it works fine.

Sampe_PDF

Bhavesh Shelke
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  • By the way, I don't see that "Replace its pages with PDF report exported from step 1." part you quote in the Adobe Reader error message, and it does not really make sense. Are you sure you haven't mixed something up here? – mkl Sep 21 '20 at 12:37
  • *"but in crome browser it works fine"* - that essentially means nothing. PDF viewers are notorious for ignoring or repairing errors in PDFs under the hood without any indication that something is wrong. Adobe Reader started that trend but other viewers apparently have overtaken it... – mkl Sep 21 '20 at 14:25

1 Answers1

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The reason why Adobe Acrobat Reader complains is because there indeed is trash in the content streams of the second and third page of your document, there are multiple sections like this

0 Tc
1 0 0 sc
? ? m
? ? ? ? ? ? c
? ? ? ? ? ? c
? ? ? ? ? ? c
? ? ? ? ? ? c
f
0 0 0 sc
BT
1 1 1 sc
/F1 10 Tf
? ? Td
(12) Tj
ET

All these question marks would have to be numbers to make this a valid PDF content stream. There even is one similar section with numbers filled in:

1 0 0 sc
18.5 443.384 m
18.5 447.25 21.63401 450.384 25.5 450.384 c
29.36599 450.384 32.5 447.25 32.5 443.384 c
32.5 439.51801 29.36599 436.384 25.5 436.384 c
21.63401 436.384 18.5 439.51801 18.5 443.384 c
f
0 0 0 sc
BT
1 1 1 sc
/F2 10 Tf
20 440.384 Td
(12) Tj
ET

I would assume that the producer here either used the '?' as placeholders in a template and simply forgot to fill-in these placeholders (probably what you have actually is a template, not a PDF for distribution or viewing) or added these sections with NaNs (not-a-number values) which then were serialized as question marks.

mkl
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