Issue #3399959 by shalini_jha, MukhtarM, runzipel: Deprecated function: trim():

splitting_ui/src/SplittingManager.php

@@ -88,7 +88,8 @@ class SplittingManager implements SplittingManagerInterface {
       ->limit(50)
       ->fields('s');
 
-    if (!empty(trim($search))) {
+    if (!empty($search) && $search !== null)  {
+      $search = trim((string) $search);
       // Escape for LIKE matching.
       $search = $this->connection->escapeLike($search);
       // Replace wildcards with MySQL/PostgreSQL wildcards.