diff --git a/plugins/manager/lib/yform/manager/table.php b/plugins/manager/lib/yform/manager/table.php
index 7adc9440..c6741f4c 100644
--- a/plugins/manager/lib/yform/manager/table.php
+++ b/plugins/manager/lib/yform/manager/table.php
@@ -160,7 +160,7 @@ public static function getAll()
         return self::$tables;
     }
 
-    public static function table()
+    public static function table(): string
     {
         return rex::getTablePrefix() . 'yform_table';
     }
@@ -533,7 +533,6 @@ public static function deleteCache(): void
         self::$cache = null;
         self::$tables = [];
         self::$loadedAllTables = false;
-        dump('table cache deleted');
     }
 
     private static function getCache(): mixed
diff --git a/plugins/manager/lib/yform/manager/table/api.php b/plugins/manager/lib/yform/manager/table/api.php
index 8f946fce..4cf4b0aa 100644
--- a/plugins/manager/lib/yform/manager/table/api.php
+++ b/plugins/manager/lib/yform/manager/table/api.php
@@ -129,7 +129,7 @@ public static function exportTablesets(array $table_names)
     /**
      * @throws rex_sql_exception
      */
-    public static function removeTable(string $table_name)
+    public static function removeTable(string $table_name): void
     {
         $table = rex_yform_manager_table::get($table_name);
 
@@ -226,7 +226,7 @@ public static function setTableField(string $table_name, array $table_field)
     /**
      * @throws rex_sql_exception
      */
-    public static function removeTablefield(string $table_name, string $field_name)
+    public static function removeTablefield(string $table_name, string $field_name): void
     {
         $f = rex_sql::factory();
         $f->setDebug(self::$debug);
@@ -238,7 +238,7 @@ public static function removeTablefield(string $table_name, string $field_name)
     /**
      * @throws rex_sql_exception
      */
-    public static function migrateTable(string $table_name, bool $schema_overwrite = false)
+    public static function migrateTable(string $table_name, bool $schema_overwrite = false): void
     {
         $columns = rex_sql::showColumns($table_name);