Warning: The magic method Theme_Demo_Import::__wakeup() must have public visibility in /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-content/plugins/theme-demo-import/inc/class-tdi-main.php on line 74

Fatal error: Uncaught ArgumentCountError: array_merge() does not accept unknown named parameters in /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/widgets.php:1261
Stack trace:
#0 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/widgets.php(1261): array_merge(wp_inactive_widgets: Array, sidebar-1: Array, sidebar-2: Array)
#1 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/widgets.php(1216): retrieve_widgets(true)
#2 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/class-wp-hook.php(289): _wp_sidebars_changed('Moderne')
#3 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#4 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#5 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/theme.php(2974): do_action('after_switch_th...', 'Moderne', Object(WP_Theme))
#6 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/class-wp-hook.php(287): check_theme_switched('')
#7 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#8 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#9 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-settings.php(540): do_action('init')
#10 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-config.php(80): require_once('/customers/e/6/...')
#11 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-load.php(37): require_once('/customers/e/6/...')
#12 /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-blog-header.php(13): require_once('/customers/e/6/...')
#13 /customers/e/6/e/euroviews.eu/httpd.www/2020/index.php(17): require('/customers/e/6/...')
#14 {main}
  thrown in /customers/e/6/e/euroviews.eu/httpd.www/2020/wp-includes/widgets.php on line 1261