I was forced to update PHP to 7.4 and now I have errors on every page and in the backend. Looks like the theme needs an update.

Error on every page: Warning: Trying to access array offset on value of type bool in /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/themes/lz-cleaning-services-pro/inc/style.php on line 1766

Error on backend of WordPress:
Fatal error
: Uncaught ValueError: Missing format specifier at end of string in /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/views/dashboard/branded-wp-column.php:5 Stack trace: #0 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/views/dashboard/branded-wp-column.php(5): sprintf(‘by %’, ‘IONOS’) #1 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/view.php(44): require(‘/homepages/26/d…’) #2 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/views/dashboard/welcome-panel-second-run.php(8): One_And_One_Assistant_View::load_template(‘dashboard/brand…’) #3 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/view.php(44): require(‘/homepages/26/d…’) #4 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/dashboard.php(167): One_And_One_Assistant_View::load_template(‘dashboard/welco…’, Array) #5 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/dashboard.php(142): One_And_One_Assistant_Dashboard->render_welcome_panel() #6 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-includes/class-wp-hook.php(308): One_And_One_Assistant_Dashboard->render_dashboard_panels(”) #7 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #8 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #9 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-admin/admin-header.php(303): do_action(‘admin_notices’) #10 /homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-admin/index.php(137): require_once(‘/homepages/26/d…’) #11 {main} thrown in
/homepages/26/d342779392/htdocs/clickandbuilds/newmetrowestvacuums/wp-content/plugins/1and1-wordpress-assistant/inc/views/dashboard/branded-wp-column.php

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