diff --git a/src/classes/importer/class-tainacan-test-importer.php b/src/classes/importer/class-tainacan-test-importer.php
index 0e4d6b948..344452da2 100644
--- a/src/classes/importer/class-tainacan-test-importer.php
+++ b/src/classes/importer/class-tainacan-test-importer.php
@@ -80,6 +80,12 @@ class Test_Importer extends Importer {
 	protected $extra_values = [
 		'extra val 1', 'extra val 2', 'extra val 3', 'extra val 4', 'extra val 5'
 	];
+
+	protected $tax_repo;
+	protected $col_repo;
+	protected $items_repo;
+	protected $metadata_repo;
+	protected $item_metadata_repo;
 	
 	public function __construct($attributes = array()) {
 		parent::__construct($attributes);
diff --git a/src/classes/repositories/class-tainacan-metadata.php b/src/classes/repositories/class-tainacan-metadata.php
index f09c56672..834d33dd0 100644
--- a/src/classes/repositories/class-tainacan-metadata.php
+++ b/src/classes/repositories/class-tainacan-metadata.php
@@ -1266,7 +1266,7 @@ class Metadata extends Repository {
 		}
 
 		$search_q = '';
-		$search = trim($args['search']);
+		$search = trim($args['search'] ?? '');
 		if (!empty($search)) {
 			if( $metadatum_type === 'Tainacan\Metadata_Types\Relationship' ) {
 				$search_q = $wpdb->prepare("AND meta_value IN ( SELECT ID FROM $wpdb->posts WHERE post_title LIKE %s )", '%' . $search . '%');