Fatal error: Cannot redeclare _remove_theme_attribute_in_block_template_content() (previously declared in /wp-includes/block-template-utils.php:525) in /wp-includes/deprecated.php on line 6098
Fatal error: Uncaught Error: Call to a member function set() on null in /wp-includes/l10n.php:806
Stack trace:
#0 /wp-includes/l10n.php(900): load_textdomain('default', '//wp-content/la...', 'pl_PL')
#1 /wp-includes/class-wp-fatal-error-handler.php(47): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
thrown in /wp-includes/l10n.php on line 806