Error 500 with the export inPDF

[mentalo-]

Issue details

I want to export my articles in pdf. I click on the export icon, then in "PDF" in the right bar.
Instead of the exported file, I got this error :

500: Internal Server Error
Error: imagecreatefrompng(): gd-png: fatal libpng error: Read Error: truncated data

Environment

I use wallabag.it.
Version: 2.3.2

Steps to reproduce/test case

Clic on the icon at the top right of the screen (the arrow).
A bar opens at the right of the screen : click on "PDF" (or "EPUB")
No error with the links CSV, JSON, TXT