diff --git a/app/calls_active/calls_active.php b/app/calls_active/calls_active.php
index b39f6ff893..23dde499b1 100644
--- a/app/calls_active/calls_active.php
+++ b/app/calls_active/calls_active.php
@@ -17,7 +17,7 @@
 
 	The Initial Developer of the Original Code is
 	Mark J Crane <markjcrane@fusionpbx.com>
-	Portions created by the Initial Developer are Copyright (C) 2008-2019
+	Portions created by the Initial Developer are Copyright (C) 2008-2023
 	the Initial Developer. All Rights Reserved.
 
 	Contributor(s):
@@ -46,7 +46,7 @@
 	$text = $language->get();
 
 //get the HTTP values and set as variables
-	$show = trim($_REQUEST["show"]);
+	$show = trim($_REQUEST["show"] ?? '');
 	if ($show != "all") { $show = ''; }
 
 //show the header
@@ -56,7 +56,7 @@
 //load gateways into a session variable
 	$sql = "select gateway_uuid, domain_uuid, gateway from v_gateways where enabled = 'true' ";
 	$database = new database;
-	$gateways = $database->select($sql, $parameters, 'all');
+	$gateways = $database->select($sql, $parameters ?? null, 'all');
 	foreach ($gateways as $row) {
 		$_SESSION['gateways'][$row['gateway_uuid']] = $row['gateway'];
 	}
diff --git a/app/calls_active/calls_active_inc.php b/app/calls_active/calls_active_inc.php
index e14ff97aaf..33e25c94b5 100644
--- a/app/calls_active/calls_active_inc.php
+++ b/app/calls_active/calls_active_inc.php
@@ -156,7 +156,7 @@
 			echo "<tr class='list-header'>\n";
 			if (permission_exists('call_active_hangup')) {
 				echo "	<th class='checkbox'>\n";
-				echo "		<input type='checkbox' id='checkbox_all' name='checkbox_all' onclick='if (this.checked) { refresh_stop(); } else { refresh_start(); } list_all_toggle();' ".($rows ?: "style='visibility: hidden;'").">\n";
+				echo "		<input type='checkbox' id='checkbox_all' name='checkbox_all' onclick='if (this.checked) { refresh_stop(); } else { refresh_start(); } list_all_toggle();' ".(empty($rows) ? "style='visibility: hidden;'" : null).">\n";
 				echo "	</th>\n";
 			}
 			echo "	<th>".$text['label-profile']."</th>\n";
diff --git a/app/calls_active/calls_exec.php b/app/calls_active/calls_exec.php
index bb34421d81..3821620331 100644
--- a/app/calls_active/calls_exec.php
+++ b/app/calls_active/calls_exec.php
@@ -70,7 +70,7 @@
 					}
 				}
 			}
-			if (is_uuid($_REQUEST['uuid'])) {
+			if (!empty($_REQUEST['uuid']) && is_uuid($_REQUEST['uuid'])) {
 				$calls[] = $_REQUEST['uuid'];
 			}