Fatal error: Out of memory (allocated 4194304) (tried to allocate 28672 bytes) in C:\dynamica\wp-includes\nav-menu.php on line 920

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