Fix tests

src/Bundle/ChillMainBundle/Test/Export/AbstractAggregatorTest.php

@@ -27,6 +27,12 @@ use function is_string;
  */
 abstract class AbstractAggregatorTest extends KernelTestCase
 {
+
+    public static function tearDownAfterClass(): void
+    {
+        self::ensureKernelShutdown();
+    }
+
     /**
      * provide data for `testAliasDidNotDisappears`.
      */