Fatal error: Uncaught Error: Undefined class constant 'POSTFINANCECHECKOUT_CK_SPACE_ID' in /home/mmkboutique/public_html/wp-content/plugins/woo-postfinance-checkout/includes/class-wc-postfinancecheckout-blocks-support.php:41 Stack trace: #0 /home/mmkboutique/public_html/wp-content/plugins/woocommerce/src/Blocks/Integrations/IntegrationRegistry.php(53): WC_PostFinanceCheckout_Blocks_Support->initialize() #1 /home/mmkboutique/public_html/wp-includes/class-wp-hook.php(324): Automattic\WooCommerce\Blocks\Integrations\IntegrationRegistry->initialize('') #2 /home/mmkboutique/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #3 /home/mmkboutique/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /home/mmkboutique/public_html/wp-settings.php(700): do_action('init') #5 /home/mmkboutique/public_html/wp-config.php(99): require_once('/home/mmkboutiq...') #6 /home/mmkboutique/public_html/wp-load.php(50): require_once('/home/mmkboutiq...') #7 /home/mmkboutique/public_html/wp-blog-hea in /home/mmkboutique/public_html/wp-content/plugins/woo-postfinance-checkout/includes/class-wc-postfinancecheckout-blocks-support.php on line 41