Fatal error: Maximum execution time of 30 seconds exceeded in E:\home\LocalUser\1036353\www\wp-includes\rest-api.php on line 15

Fatal error: Uncaught Error: Call to a member function set() on null in E:\home\LocalUser\1036353\www\wp-includes\l10n.php:854 Stack trace: #0 E:\home\LocalUser\1036353\www\wp-includes\l10n.php(957): load_textdomain() #1 E:\home\LocalUser\1036353\www\wp-includes\class-wp-fatal-error-handler.php(49): load_default_textdomain() #2 [internal function]: WP_Fatal_Error_Handler->handle() #3 {main} thrown in E:\home\LocalUser\1036353\www\wp-includes\l10n.php on line 854