Fatal error: Cannot redeclare _wp_register_meta_args_whitelist() (previously declared in C:\Inetpub\vhosts\rautenstengel.de\httpdocs\wp-includes\meta.php:1408) in C:\Inetpub\vhosts\rautenstengel.de\httpdocs\wp-includes\deprecated.php on line 4060

Fatal error: Uncaught Error: Call to undefined function wp_is_maintenance_mode() in C:\Inetpub\vhosts\rautenstengel.de\httpdocs\wp-includes\class-wp-fatal-error-handler.php:34 Stack trace: #0 [internal function]: WP_Fatal_Error_Handler->handle() #1 {main} thrown in C:\Inetpub\vhosts\rautenstengel.de\httpdocs\wp-includes\class-wp-fatal-error-handler.php on line 34