Project data should exist

Hello,

I am getting error "Project data should exist" on WP plugin Brizy. I found out my licence is empty when trying to update Brizy, to solve problem. When I try to save licens I get WP crash error. I donwloaded latest Brizy Pro plugin from your site and update it manualy. Nothing of this helped. Now I have latest plugins and latest WP. Still unable to activate licence and edit any site. 

This is error log from error, when I tried to activate licence: 

[20-Oct-2021 18:05:16 UTC] PHP Fatal error: Uncaught Exception: Execution stopped. Attempt to save invalid project data. in /data/eforum/www/simplydental.cz/home/wp-content/plugins/brizy/editor/storage/project.php:26
Stack trace:
#0 /data/eforum/www/simplydental.cz/home/wp-content/plugins/brizy/editor/project.php(327): Brizy_Editor_Storage_Project->loadStorage(Array)
#1 /data/eforum/www/simplydental.cz/home/wp-content/plugins/brizy-pro/admin/license.php(53): Brizy_Editor_Project->saveStorage()
#2 /data/eforum/www/simplydental.cz/home/wp-content/plugins/brizy-pro/admin/license.php(254): BrizyPro_Admin_License->updateLicense(Array)
#3 /data/eforum/www/simplydental.cz/home/wp-includes/class-wp-hook.php(303): BrizyPro_Admin_License->handleKeyActivation('')
#4 /data/eforum/www/simplydental.cz/home/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array)
#5 /data/eforum/www/simplydental.cz/home/wp-includes/plugin.php(470): WP_Hook->do_action(Array)
#6 /data/eforum/www/simplydental.cz/home/wp-admin/admin.php(175): do_action('admin_init')
#7 {ma in /data/eforum/www/simplydental.cz/home/wp-content/plugins/brizy/editor/storage/project.php on line 26

There is more people getting this error and ylu will need my WP credentials. Can you create private ticket for me. 

Thanks
Petr