Problem when importing pdf files

[Fr3d-P]

I've got a problem when importing some pdf files. The error is
"ValueError: cannot add non-opaque RGBA color to RGB palette"
The pdf isn't imported after that. The message itself speaks from color, a non-essential information for me, isn't this a way to force the importation of the files, even if a colour could appear incorrectly?
If not, how could I solve the problem?

[stumpylog]

The PDF has issues, probably with an image. General options include:

• Cleaning with qpdf: qpdf --replace-input
• Printing to a PDF file

[Fr3d-P]

I tried to recompress the pdf with Apple's pdf engine, with no luck.
I tried qpdf, it didn't solve the problem.

In fact, after this problem I found another one: the characters of the words are often separated with spaces in Paperless, making it impossible to search or tag by content.

Those problems doesn't exists when viewing or searching in those pdfs from the Finder, so I understand paperless ngx doesn't work for me, for a reason I don't explain, I have to search something else for my needs.

[github-actions[bot]]

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[microtherion]

That does not seem like a good resolution of the issue. I'm suffering from the same problem in one of my PDFs: https://www.mercedes-benz.ch/content/dam/switzerland/passengercars/e-mobility/charging-services-wallbox-05-2022.pdf

Will try to dig into the PDF to see whether I can spot any obvious reasons for the failure.

[autumnwalker]

I'm having the same issue with this PDF https://assets.tripplite.com/owners-manual/poweralert-device-manager-padm-20-users-guide-en.pdf

Staying tuned for any possible solutions.