For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
Please see our announcement here.
<?php echo FabrikHelperHTML::image($d->list_delete_icon, 'list', $d->tpl, array('alt' => $d->label))?> <?php echo $d->text;?></a>
<?php echo FabrikHelperHTML::image('trash', 'list', $d->tpl, array('alt' => $d->label))?> <?php echo $d->text;?></a>
$args[0]['tableHeadings']['fabrik_actions'] = 'Actions';