Error to deploy categories

I′m trying to use this plugin but the categories filter generate error when I try to deploy a category to see subcategories.
It′s clearly an error from the plugin (version : 3.6) :

PHP Fatal error:  Uncaught TypeError: Argument 2 passed to Premmerce\Filter\Ajax\Strategy\WidgetsStrategy::updateResponse() must be of the type array, null given, called in /my-path/wp-content/plugins/premmerce-woocommerce-product-filter-premium/src/Frontend/Frontend.php on line 75 and defined in /my-path/wp-content/plugins/premmerce-woocommerce-product-filter-premium/src/Ajax/Strategy/WidgetsStrategy.php:9
Stack trace:
#0 /my-path/wp-content/plugins/premmerce-woocommerce-product-filter-premium/src/Frontend/Frontend.php(75): Premmerce\Filter\Ajax\Strategy\WidgetsStrategy->updateResponse(Array, NULL)
#1 /my-path/wp-includes/class-wp-hook.php(303): Premmerce\Filter\Frontend\Frontend->filterResponse('')
#2 /my-path/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array)
#3 /my-path/wp-content/plugins/premmerce-woocommerce-product-filter-premium/src/Ajax/Strategy/WidgetsStrategy.php on line 9

Is it possible to fix it ?