When the table displaying past workflow changes loads it passes the comment field of the workflow change to a function that doesn't support NULL parameter inputs in Drupal 9, PHP 8. To avoid warnings when a workflow change with a blank comment is being loaded the code should be changed to change NULL parameters to an empty string.
Replace the current code on line 169 of WorkflowTransitionListBuilder.php in the src folder of the workflow module:
$row['comment']['data'] = html_entity_decode($transition->getComment()); // 'class' => array('log-comment')
with this new code:
if($transition->getComment() == NULL) {
$row['comment']['data'] = "";
}
else {
$row['comment']['data'] = html_entity_decode($transition->getComment()); // 'class' => array('log-comment')
}
Closed: duplicate
1.6
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I made a patch that removes the call to the deprecated function by changing a NULL parameter to an empty string instead.
This is already fixed in 🐛 D10: html_entity_decode(): Passing null to parameter #1 (string) is deprecated Fixed , in dev version . Please try that version. I will release a version 1.7 shortly.