Fix: hestiacp#2968

Author: jaapmarcus

web/templates/pages/list_log.html

@@ -15,7 +15,7 @@
 			<?php } ?>
 			<?php if ($_SESSION['DEMO_MODE'] != "yes"){
 			if (($_SESSION['userContext'] === 'admin') && (htmlentities($_GET['user']) !== 'admin')) { ?>
-				<?php if (($_SESSION['userContext'] === 'admin') && (isset($_GET['user'])) && (htmlentities($_GET['user']) !== 'admin')) { ?>
+				<?php if (($_SESSION['userContext'] === 'admin') && ($_GET['user'] != '') && (htmlentities($_GET['user']) !== 'admin')) { ?>
 					<?php if (htmlentities($_GET['user']) !== 'system') {?>
 						<a href="/list/log/auth/?user=<?=htmlentities($_GET['user']); ?>&token=<?=$_SESSION['token']?>" id="btn-back" class="ui-button cancel" dir="ltr" title="<?=_('Login history');?>"><i class="fas fa-binoculars status-icon green"></i><?=_('Login history');?></a>
 					<?php } ?>