Takes forever to publish page edited with Gutenberg or edit with Elementor

Hello,
I just installed WordPress 5.5 on my raspberry pi 3B+ (buster).
Problem I’ve got is when I try to publish a page edited with Gutenberg, it loads forever and never reach.
Same problem when I click on “edit with elementor”.
I have no other plugins than elementor and twentytwenty theme.
I tried disabling Elementor, same problem.
I also tried changing wp-config.php to add define('WP_MEMORY_LIMIT', '256M');

WP 5.5
php 7.3.21-1

Does anyone have a solution please ?



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