Fatal error: Uncaught TypeError: WP_Translation_Controller::load_file(): Argument #2 ($textdomain) must be of type string, null given, called in /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/l10n.php on line 838 and defined in /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/l10n/class-wp-translation-controller.php:101
Stack trace:
#0 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/l10n.php(838): WP_Translation_Controller->load_file('/home/httpd/vho...', NULL, 'de_DE')
#1 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/l10n.php(1005): load_textdomain(NULL, '/home/httpd/vho...', 'de_DE')
#2 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/themes/Divi/includes/builder/api/DiviExtension.php(266): load_plugin_textdomain(NULL, false, 'wp-tools-gravit...')
#3 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/themes/Divi/includes/builder/api/DiviExtension.php(126): DiviExtension->_initialize()
#4 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/plugins/wp-tools-gravity-forms-divi-module/includes/modules/GravityFormExtension.php(50): DiviExtension->__construct('et_pb_wpt_gravi...', Array)
#5 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/plugins/wp-tools-gravity-forms-divi-module/src/Divi/Divi.php(28): WPT_Divi_Gravity_Modules\GravityFormExtension->__construct(Object(WPT\DiviGravity\Loader))
#6 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/class-wp-hook.php(324): WPT\DiviGravity\Divi\Divi->divi_extensions_init('')
#7 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#8 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#9 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/themes/Divi/includes/builder/api/DiviExtensions.php(89): do_action('divi_extensions...')
#10 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/themes/Divi/includes/builder/api/DiviExtensions.php(123): DiviExtensions::initialize()
#11 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/themes/Divi/includes/builder/framework.php(163): require_once('/home/httpd/vho...')
#12 /home/httpd/vhosts/lexart.ch/httpdocs/wp-content/themes/Divi/et-pagebuilder/et-pagebuilder.php(13): require_once('/home/httpd/vho...')
#13 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/class-wp-hook.php(324): et_setup_builder('')
#14 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#15 /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#16 /home/httpd/vhosts/lexart.ch/httpdocs/wp-settings.php(695): do_action('init')
#17 /home/httpd/vhosts/lexart.ch/httpdocs/wp-config.php(102): require_once('/home/httpd/vho...')
#18 /home/httpd/vhosts/lexart.ch/httpdocs/wp-load.php(50): require_once('/home/httpd/vho...')
#19 /home/httpd/vhosts/lexart.ch/httpdocs/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#20 /home/httpd/vhosts/lexart.ch/httpdocs/index.php(17): require('/home/httpd/vho...')
#21 {main}
  thrown in /home/httpd/vhosts/lexart.ch/httpdocs/wp-includes/l10n/class-wp-translation-controller.php on line 101