Warning: Trying to access array offset on value of type bool in /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/functions.php on line 2722

Warning: Cannot modify header information - headers already sent by (output started at /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/functions.php:2722) in /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/plugins/onecom-vcache/vcaching.php on line 543

Fatal error: Uncaught ValueError: Unknown format specifier " " in /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/class-et-builder-element.php:3504
Stack trace:
#0 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3504): sprintf('W\xC3\xA4hlen Sie ein...', 'Titel')
#1 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3172): ET_Builder_Element->_add_font_fields()
#2 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(419): ET_Builder_Element->_add_additional_fields()
#3 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/module/Accordion.php(429): ET_Builder_Element->__construct()
#4 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/main-modules.php(23): require_once('/customers/6/a/...')
#5 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/framework.php(612): require_once('/customers/6/a/...')
#6 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-includes/class-wp-hook.php(287): et_builder_add_main_elements(Object(WP))
#7 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#8 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-includes/plugin.php(544): WP_Hook->do_action(Array)
#9 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-includes/class-wp.php(752): do_action_ref_array('wp', Array)
#10 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-includes/functions.php(1274): WP->main('')
#11 /customers/6/a/a/indieberlin.de/httpd.www/services/wp-blog-header.php(16): wp()
#12 /customers/6/a/a/indieberlin.de/httpd.www/services/index.php(17): require('/customers/6/a/...')
#13 {main}
  thrown in /customers/6/a/a/indieberlin.de/httpd.www/services/wp-content/themes/Divi/includes/builder/class-et-builder-element.php on line 3504