nextcloud-server/apps/files_sharing/templates/sharenotfound.php

<?php
/**
 * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-only
 */

use OCP\IURLGenerator;
use OCP\Server;

$urlGenerator = Server::get(IURLGenerator::class);
?>
<div class="body-login-container update">
	<div>
		<svg xmlns="http://www.w3.org/2000/svg" height="70" viewBox="0 -960 960 960" width="70">
			<path fill="currentColor" d="m674-456-50-50 69-70-69-69 50-51 70 70 69-70 51 51-70 69 70 70-51 50-69-69-70 69Zm-290-24q-60 0-102-42t-42-102q0-60 42-102t102-42q60 0 102 42t42 102q0 60-42 102t-102 42ZM96-192v-92q0-26 12.5-47.5T143-366q55-32 116-49t125-17q64 0 125 17t116 49q22 13 34.5 34.5T672-284v92H96Z"/>
		</svg>
	</div>
	<h2><?php p($l->t('Share not found')); ?></h2>
	<p class="infogroup"><?php p($_['message'] ?: $l->t('This share does not exist or is no longer available')); ?></p>
	<p><a class="button primary" href="<?php p($urlGenerator->linkTo('', 'index.php')) ?>">
		<?php p($l->t('Back to %s', [$theme->getName()])); ?>
	</a></p>
</div>