FIX #14279 TIME 0 unit test | fix strpos(): Passing null to parameter #1 () of type string

src/core/models/DatabaseModel.php

@@ -305,7 +305,7 @@ class DatabaseModel
         $dataSet = [];
         if (!empty($args['set'])) {
             foreach ($args['set'] as $key => $value) {
-                if ($value == 'SYSDATE' || strpos($value, 'CURRENT_TIMESTAMP') !== false) {
+                if ($value == 'SYSDATE' || (!empty($value) && strpos($value, 'CURRENT_TIMESTAMP') !== false)) {
                     $querySet[] = "{$key} = {$value}";
                 } else {
                     $querySet[] = "{$key} = ?";