Error – not import content.xml and Initial max execution time = 300

Hello,
I encountered this problem when importing demo data
https://neromaxdemo1.brandmax.pro/wp-content/uploads/2021/04/log_file_2021-04-17__11-12-17.txt
I researched a lot, but I can’t find the reason.

But the widget data is excellent upload.
contents.xml and option.dat are never uploaded.

This is my custom menu – function.php
register_nav_menus (array (
‘menu-1’ => esc_html __ (‘Primary’, ‘neromax’),
));

this is demo import function
set_theme_mod (‘nav_menu_locations’, array (
‘menu-1’ => $ main_menu-> term_id, // replace ‘main-menu’ here with the menu location identifier from register_nav_menu () function
)
I change main-menu to menu-1 from demo import function
but – it did not help

Please help me!