The force option is a boolean not a scalar

Author: Michal Kierat

DependencyInjection/Configuration.php

@@ -64,7 +64,7 @@ public function getConfigTreeBuilder()
                     ->canBeEnabled()
                     ->children()
                         ->booleanNode('enabled')->defaultFalse()->end()
-                        ->scalarNode('force')->defaultFalse()->end()
+                        ->booleanNode('force')->defaultFalse()->end()
                         ->scalarNode('service')->defaultNull()->end()
                     ->end()
                 ->end()