First line of the stack trace is:

TypeError: Argument 1 passed to Drupal\file\FileUsage\DatabaseFileUsageBackend::add() must implement interface Drupal\file\FileInterface, boolean given, called in /var/www/html/web/modules/contrib/unoconv/src/Plugin/Field/FieldFormatter/PdfResponsive.php on line 190 in /var/www/html/web/core/modules/file/src/FileUsage/DatabaseFileUsageBackend.php

Comments

thtas created an issue. See original summary.

thtas’s picture

thtas commented
Status: Active » Needs work

This was because my private file system wasn't configured.