Error when working locally with xampp/woocommerce

Hello, im trying to install the DHL plugin for woocommerce. When its downloaded and i try to activate it im getting the following error:

Fatal error: Uncaught Error: Class "DHLPWC_Controller_Isolated_Load_Switcher" not found in C:\xampp\htdocs\testsite\wp-content\plugins\dhl-for-woocommerce\dhlpwoocommerce\dhlpwoocommerce.php:57 Stack trace: #0 C:\xampp\htdocs\testsite\wp-includes\class-wp-hook.php(303): DHLPWC->init('') #1 C:\xampp\htdocs\testsite\wp-includes\class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #2 C:\xampp\htdocs\testsite\wp-includes\plugin.php(470): WP_Hook->do_action(Array) #3 C:\xampp\htdocs\testsite\wp-settings.php(441): do_action('plugins_loaded') #4 C:\xampp\htdocs\testsite\wp-config.php(90): require_once('C:\\xampp\\htdocs...') #5 C:\xampp\htdocs\testsite\wp-load.php(50): require_once('C:\\xampp\\htdocs...') #6 C:\xampp\htdocs\testsite\wp-admin\admin.php(34): require_once('C:\\xampp\\htdocs...') #7 C:\xampp\htdocs\testsite\wp-admin\plugins.php(10): require_once('C:\\xampp\\htdocs...') #8 {main} thrown in C:\xampp\htdocs\testsite\wp-content\plugins\dhl-for-woocommerce\dhlpwoocommerce\dhlpwoocommerce.php on line 57

When this happens im unable to use wordpress at all anymore. Anyone knows what i can do to fix this? Id love to use the DHL plugin for testing a couple of things.

Thanks in advance,

Rob