Homepage doesn’t load anymore

Since i’ve load the new update, there is an error on the homepage. All the other stuff works… We only have nearly a white site.

Array
(
    [home_url] => https://micha175.myhostpoint.ch
    [site_url] => https://micha175.myhostpoint.ch
    [version] => 3.5.4
    [wp_version] => 5.0.3
    [wp_multisite] => 
    [wp_memory_limit] => 40M
    [wp_debug_mode] => 
    [wp_cron] => 1
    [language] => de_DE
    [server_info] => Apache/2.4
    [php_version] => 7.2.15
    [php_post_max_size] => 32M
    [php_max_execution_time] => 300
    [php_max_input_vars] => 2000
    [max_upload_size] => 33554432
    [default_timezone] => UTC
    [theme] => Array
        (
            [name] => Halena child
            [version] => 1.0.2
            [parent_theme] => Halena
        )

    [active_plugins] => Array
        (
            [0] => agni-halena-plugin/agni_halena.php
            [1] => akismet/akismet.php
            [2] => backwpup/backwpup.php
            [3] => contact-form-7/wp-contact-form-7.php
            [4] => envato-market/envato-market.php
            [5] => js_composer/js_composer.php
            [6] => official-mailerlite-sign-up-forms/mailerlite.php
            [7] => perfect-woocommerce-brands/main.php
            [8] => postfinance-payment-gateway-woocommerce/woocommerce-postfinance-gateway.php
            [9] => revslider/revslider.php
            [10] => woo-mailerlite/woo-mailerlite.php
            [11] => woocommerce/woocommerce.php
            [12] => wordfence/wordfence.php
            [13] => wordpress-seo/wp-seo.php
            [14] => wp-fastest-cache/wpFastestCache.php
            [15] => wp-multi-step-checkout/wp-multi-step-checkout.php
            [16] => wp-post-page-clone/wp-post-page-clone.php
            [17] => wpcf7-recaptcha/wpcf7-recaptcha.php
            [18] => yikes-inc-easy-custom-woocommerce-product-tabs/yikes-inc-easy-custom-woocommerce-product-tabs.php
            [19] => yith-woocommerce-wishlist/init.php
        )

    [pwb_options] => Array
        (
            [version] => 1.7.1
            [wc_pwb_admin_tab_brand_single_position] => after_meta
            [old_wc_pwb_admin_tab_slug] => brand
            [wc_pwb_notice_plugin_review] => 
            [wc_pwb_admin_tab_slug] => 
            [wc_pwb_admin_tab_brand_desc] => 
            [wc_pwb_admin_tab_brand_single_product_tab] => 
            [wc_pwb_admin_tab_brands_in_loop] => brand_link
            [wc_pwb_admin_tab_brands_in_single] => brand_image
            [wc_pwb_admin_tab_brand_logo_size] => 
        )

)

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