diff --git a/inc/admin/struttura.php b/inc/admin/struttura.php
index 3fbb69217..f7b5e8bb5 100644
--- a/inc/admin/struttura.php
+++ b/inc/admin/struttura.php
@@ -457,5 +457,4 @@ function dsi_struttura_admin_script() {
     global $post_type;
     if( 'struttura' == $post_type )
         wp_enqueue_script( 'struttura-admin-script', get_template_directory_uri() . '/inc/admin-js/struttura.js' );
-}
 }
\ No newline at end of file
diff --git a/inc/cmb2.php b/inc/cmb2.php
index 6f6e82266..bf85833a2 100755
--- a/inc/cmb2.php
+++ b/inc/cmb2.php
@@ -12,7 +12,8 @@
 
 
 function dsi_get_user_options( $query_args = false) {
-
+	if(!is_array($query_args)) $query_args = [];
+	
 	if(!$query_args)
 		$query_args['fields'] = array( 'ID', 'display_name' );
 
diff --git a/inc/vendor/CMB2-field-Leaflet-Geocoder/cmb-field-leaflet-map.php b/inc/vendor/CMB2-field-Leaflet-Geocoder/cmb-field-leaflet-map.php
index 4e1b843c1..07837d5cb 100755
--- a/inc/vendor/CMB2-field-Leaflet-Geocoder/cmb-field-leaflet-map.php
+++ b/inc/vendor/CMB2-field-Leaflet-Geocoder/cmb-field-leaflet-map.php
@@ -137,7 +137,8 @@ protected function localize_script( $args ) {
      *
      * @internal param array $args
      */
-    protected function render_input( $field_name = '', CMB2_Field $field, $field_escaped_value, CMB2_Types $field_type_object ) {
+    protected function render_input( $field_name, CMB2_Field $field, $field_escaped_value, CMB2_Types $field_type_object ) {
+    	if (is_null($field_name)) $field_name = '';
         $attrs = $field_type_object->concat_attrs( [
             'id'    => "{$field->args( 'id' )}_{$field_name}",
             'type'  => 'hidden',
diff --git a/inc/vendor/CMB2/includes/rest-api/CMB2_REST.php b/inc/vendor/CMB2/includes/rest-api/CMB2_REST.php
index fabb7b8ba..517bf5399 100644
--- a/inc/vendor/CMB2/includes/rest-api/CMB2_REST.php
+++ b/inc/vendor/CMB2/includes/rest-api/CMB2_REST.php
@@ -761,7 +761,8 @@ public function field_can_edit( $field_id, $return_object = false ) {
 	 *
 	 * @return mixed                            False if field can't be read or edited or true|CMB2_Field object.
 	 */
-	protected function field_can( $type = 'read_fields', $field_id, $return_object = false ) {
+	protected function field_can( $type, $field_id, $return_object = false ) {
+    	if (is_null($type)) $type = 'read_fields';
 		if ( ! in_array( $field_id instanceof CMB2_Field ? $field_id->id() : $field_id, $this->{$type}, true ) ) {
 			return false;
 		}
diff --git a/inc/vendor/CMB2/includes/types/CMB2_Type_Multi_Base.php b/inc/vendor/CMB2/includes/types/CMB2_Type_Multi_Base.php
index 652c92c41..d01d98c38 100644
--- a/inc/vendor/CMB2/includes/types/CMB2_Type_Multi_Base.php
+++ b/inc/vendor/CMB2/includes/types/CMB2_Type_Multi_Base.php
@@ -31,7 +31,8 @@ public function select_option( $args = array() ) {
 	 * @param  int   $i    Iterator value
 	 * @return string       Gnerated list item html
 	 */
-	public function list_input( $args = array(), $i ) {
+	public function list_input( $args, $i ) {
+    	if (is_null($args)) $args = array();
 		$a = $this->parse_args( 'list_input', array(
 			'type'  => 'radio',
 			'class' => 'cmb2-option',
diff --git a/inc/vendor/cmb-field-select2-master/cmb-field-select2.php b/inc/vendor/cmb-field-select2-master/cmb-field-select2.php
index b1d1d353b..2a983d5c3 100755
--- a/inc/vendor/cmb-field-select2-master/cmb-field-select2.php
+++ b/inc/vendor/cmb-field-select2-master/cmb-field-select2.php
@@ -80,7 +80,8 @@ public function render_pw_multiselect( $field, $field_escaped_value, $field_obje
 	 * Return the list of options, with selected options at the top preserving their order. This also handles the
 	 * removal of selected options which no longer exist in the options array.
 	 */
-	public function get_pw_multiselect_options( $field_escaped_value = array(), $field_type_object ) {
+	public function get_pw_multiselect_options( $field_escaped_value, $field_type_object ) {
+    	if (is_null($field_escaped_value)) $field_escaped_value = array();
 		$options = (array) $field_type_object->field->options();
 
 		// If we have selected items, we need to preserve their order
diff --git a/template-parts/autore/card-insegnante.php b/template-parts/autore/card-insegnante.php
index 68351858b..55b274b31 100755
--- a/template-parts/autore/card-insegnante.php
+++ b/template-parts/autore/card-insegnante.php
@@ -1,5 +1,6 @@
 <?php
 global $autore;
+$image_id = null;
 $foto_url = get_the_author_meta('_dsi_persona_foto', $autore->ID);
 if($foto_url)
 	$image_id = attachment_url_to_postid($foto_url);
diff --git a/template-parts/autore/card.php b/template-parts/autore/card.php
index 4dbffbc25..bd48a621b 100755
--- a/template-parts/autore/card.php
+++ b/template-parts/autore/card.php
@@ -1,5 +1,6 @@
 <?php
 global $autore;
+$image_id = null;
 $foto_url = get_the_author_meta('_dsi_persona_foto', $autore->ID);
 if($foto_url)
 	$image_id = attachment_url_to_postid($foto_url);
diff --git a/template-parts/single/bottom.php b/template-parts/single/bottom.php
index 58c0db4cf..2bfd60288 100755
--- a/template-parts/single/bottom.php
+++ b/template-parts/single/bottom.php
@@ -10,7 +10,7 @@
 		echo $date_update->format('d.m.Y');
 		?></p>
     <p><?php
-        if(trim($licenza)!= "")
+        if($licenza && trim($licenza)!= "")
             echo $licenza;
         else
             _e("Eccetto dove diversamente specificato, questo articolo è stato rilasciato sotto Licenza Creative Commons Attribuzione 4.0 Italia.", "design_scuole_italia"); ?></p>