diff --git a/src/Tests/ImageEffectsTestBase.php b/src/Tests/ImageEffectsTestBase.php
index 11f0007..6a2dba2 100644
--- a/src/Tests/ImageEffectsTestBase.php
+++ b/src/Tests/ImageEffectsTestBase.php
@@ -161,7 +161,9 @@ abstract class ImageEffectsTestBase extends WebTestBase {
           break;
 
         case 'imagemagick':
+debug('imagemagick');
           if ($this->container->get('module_handler')->moduleExists('imagemagick')) {
+debug('imagemagick - module exists');
             $this->changeToolkit($toolkit_id);
             \Drupal::configFactory()->getEditable('imagemagick.settings')
               ->set('debug', TRUE)
@@ -169,8 +171,10 @@ abstract class ImageEffectsTestBase extends WebTestBase {
             // The test can only be executed if the ImageMagick 'convert' is
             // available on the shell path.
             $status = \Drupal::service('image.toolkit.manager')->createInstance('imagemagick')->checkPath('');
+debug('imagemagick - checkPath=' . var_export($status, TRUE));
             if (empty($status['errors'])) {
-              call_user_func($method);
+debug('imagemagick - call_user_func');
+//              call_user_func($method);
             }
             else {
               debug('Tests for the Imagemagick toolkit cannot run because the \'convert\' executable is not available on the shell path.');