diff --git a/ajax_dataload.php b/ajax_dataload.php
index 3d8a45e04..58e2e0cde 100755
--- a/ajax_dataload.php
+++ b/ajax_dataload.php
@@ -22,11 +22,13 @@ include_once __DIR__.'/core.php';
 use Util\Query;
 
 // Informazioni fondamentali
-$columns = filter('columns');
-$order = filter('order')[0];
+$columns = (array) filter('columns');
+$order = filter('order') ? filter('order')[0] : [];
 $draw_numer = intval(filter('draw'));
 
-$order['column'] = $order['column'] - 1;
+if (!empty(filter('order'))) {
+    $order['column'] = $order['column'] - 1;
+}
 array_shift($columns);
 
 $total = Util\Query::readQuery($structure);
@@ -157,7 +159,7 @@ if (!empty($query)) {
                 $id_record = $r['id'];
                 $hash = '';
 
-                $id_module = $r['_link_module_'] ?: $id_module;
+                $id_module = !empty($r['_link_module_']) ? $r['_link_module_'] : $id_module;
                 if (!empty($r['_link_record_'])) {
                     $id_record = $r['_link_record_'];
                     $hash = !empty($r['_link_hash_']) ? '#'.$r['_link_hash_'] : '';
diff --git a/core.php b/core.php
index 66cc7c47f..3b5eed64e 100755
--- a/core.php
+++ b/core.php
@@ -20,8 +20,6 @@
 // Rimozione header X-Powered-By
 header_remove('X-Powered-By');
 
-ini_set('session.cookie_samesite', 'strict');
-
 // Impostazioni di configurazione PHP
 date_default_timezone_set('Europe/Rome');
 
@@ -121,6 +119,14 @@ if (!API\Response::isAPIRequest()) {
     $handlers[] = new StreamHandler($docroot.'/logs/api.log', Monolog\Logger::ERROR);
 }
 
+// Sicurezza della sessioni
+ini_set('session.cookie_samesite', 'strict');
+ini_set('session.use_trans_sid', '0');
+ini_set('session.use_only_cookies', '1');
+
+session_set_cookie_params(0, $rootdir, null, isHTTPS(true));
+session_start();
+
 // Disabilita i messaggi nativi di PHP
 ini_set('display_errors', 0);
 // Ignora gli avvertimenti e le informazioni relative alla deprecazione di componenti
@@ -144,13 +150,6 @@ $dbo = $database = database();
 
 /* SESSIONE */
 if (!API\Response::isAPIRequest()) {
-    // Sicurezza della sessioni
-    ini_set('session.use_trans_sid', '0');
-    ini_set('session.use_only_cookies', '1');
-
-    session_set_cookie_params(0, $rootdir, null, isHTTPS(true));
-    session_start();
-
     // Barra di debug (necessario per loggare tutte le query)
     if (App::debug()) {
         $debugbar = new DebugBar\DebugBar();
diff --git a/modules/anagrafiche/bulk.php b/modules/anagrafiche/bulk.php
index 45a6b90ad..35aa2f1b2 100755
--- a/modules/anagrafiche/bulk.php
+++ b/modules/anagrafiche/bulk.php
@@ -65,6 +65,8 @@ switch (post('op')) {
         break;
 }
 
+$operations = [];
+
 if (App::debug()) {
     $operations['delete-bulk'] = [
         'text' => '<span><i class="fa fa-trash"></i> '.tr('Elimina selezionati').'</span>',
diff --git a/plugins/importFE/src/Interaction.php b/plugins/importFE/src/Interaction.php
index 10af3bb35..a4ef30a0d 100755
--- a/plugins/importFE/src/Interaction.php
+++ b/plugins/importFE/src/Interaction.php
@@ -44,6 +44,8 @@ class Interaction extends Services
 
     public static function getRemoteList()
     {
+        $list = [];
+
         // Ricerca da remoto
         if (self::isEnabled()) {
             $response = static::request('POST', 'fatture_da_importare');
@@ -54,7 +56,7 @@ class Interaction extends Services
             }
         }
 
-        return $list ?: [];
+        return $list;
     }
 
     public static function getFileList($list = [])
diff --git a/plugins/importFE/src/InvoiceHook.php b/plugins/importFE/src/InvoiceHook.php
index 90c7155ad..4da147a40 100755
--- a/plugins/importFE/src/InvoiceHook.php
+++ b/plugins/importFE/src/InvoiceHook.php
@@ -36,7 +36,7 @@ class InvoiceHook extends CachedManager
 
     public function response()
     {
-        $results = $this->getCache()->content;
+        $results = (array) $this->getCache()->content;
 
         $count = count($results);
         $notify = false;