Conflict with Block Editor Kit for Contact Form 7 – CF7 Blocks

Hi,

There is a new plugin in the Wordpress Plugin directory: Block Editor Kit for Contact Form 7 – CF7 Blocks.
This looks very promising, Contact 7 forms with use of Gutenberg blocks.

After activating it won't work.
After switching from Generatepress - child theme to the Twenty Twenty-Three it works.

Looking in the debug it shows a PHP Fatal error, look at the trace at the end.
It looks like a conflict between plugin and theme.

Is this something the plugin-builder should fix?

Kind regards,
Jan

[06-Jan-2023 09:18:20 UTC] PHP Fatal error: Uncaught Error: Class 'WP_Theme_JSON_Data_Gutenberg' not found in /home/jbbase/public_html/wp-content/plugins/cf7-blocks/app/core/Editor.php:44
Stack trace:
#0 /home/jbbase/public_html/wp-includes/class-wp-hook.php(308): CakeWP\CF7Blocks\Core\Editor->wp_theme_json_data_theme()
#1 /home/jbbase/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#2 /home/jbbase/public_html/wp-includes/class-wp-theme-json-resolver.php(265): apply_filters()
#3 /home/jbbase/public_html/wp-includes/class-wp-theme-json-resolver.php(561): WP_Theme_JSON_Resolver::get_theme_data()
#4 /home/jbbase/public_html/wp-includes/global-styles-and-settings.php(103): WP_Theme_JSON_Resolver::get_merged_data()
#5 /home/jbbase/public_html/wp-includes/block-editor.php(413): wp_get_global_stylesheet()
#6 /home/jbbase/public_html/wp-content/plugins/cf7-blocks/app/core/Editor.php(215): get_block_editor_settings()
#7 /home/jbbase/public_html/wp-content/plugins/cf7-blocks/app/core/Handler.php(45): CakeWP\CF7Blocks\Core\Editor->get_editor_set in /home/jbbase/public_html/wp-content/plugins/cf7-blocks/app/core/Editor.php on line 44