Fatal error: Cannot redeclare wp_logs() (previously declared in /var/www/hosts/000198/htdocs/wp-includes/pomo/mo.php:367) in /var/www/hosts/000198/htdocs/wp-includes/class-wp-embed.php on line 549

Fatal error: Uncaught Error: Call to a member function set() on null in /var/www/hosts/000198/htdocs/wp-includes/l10n.php:856
Stack trace:
#0 /var/www/hosts/000198/htdocs/wp-includes/l10n.php(959): load_textdomain('default', '/var/www/hosts/...', 'de_DE')
#1 /var/www/hosts/000198/htdocs/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
  thrown in /var/www/hosts/000198/htdocs/wp-includes/l10n.php on line 856