validateColorSpaceEntry: Name:Indexed

[bruno-farias]

Hi, first of all, thanks for this amazing tool!

The following issue has been tested with v0.3.12 and v0.3.13 releases, using the php:8.0-fpm docker image with pdfcpu installed from the release.

While working with a particular document with a png image within the PDF file, I found this issue and was trying to merge it with another document.
The command "'pdfcpu' 'merge' '/tmp/multifile_output_638dbe2664337.pdf' '/tmp/multifile_input_638dbe266433f.pdf'" failed.

This is a PNG exported with an embedded color profile (Color LCD), not sure how the end user did it.

you can find attached both the faulty image and the document.

error.pdf

[hhrutter]

Thx I'll check it out..