WordPress sending me an error for this plugin

Hi!

So over and over I get this error in my Email inbox regarding your plugin for my site:
“`Uppgifter om felet
==================
Ett fel av typen E_ERROR uppstod p? rad 57 i f?ljande fil: /srv/htdocs/wp-content/plugins/easy-adsense-ads-scripts-manager/admin/meta-boxes.php. Felorsak: Uncaught TypeError: Cannot access offset of type string on string in /srv/htdocs/wp-content/plugins/easy-adsense-ads-scripts-manager/admin/meta-boxes.php:57
Stack trace:
#0 /wordpress/core/5.9.3/wp-includes/class-wp-hook.php(307): eaa_save_meta_box(129115, Object(WP_Post), true)
#1 /wordpress/core/5.9.3/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#2 /wordpress/core/5.9.3/wp-includes/plugin.php(474): WP_Hook->do_action(Array)
#3 /wordpress/core/5.9.3/wp-includes/post.php(4687): do_action(‘save_post’, 129115, Object(WP_Post), true)
#4 /wordpress/core/5.9.3/wp-includes/post.php(4789): wp_insert_post(Array, false, true)
#5 /wordpress/core/5.9.3/wp-admin/includes/post.php(426): wp_update_post(Array)
#6 /wordpress/core/5.9.3/wp-admin/post.php(227): edit_post()
#7 {main}
thrown”`

I should mention that I not see samthing on the site but it looks to be same kind of issue.

Please fix asap ??

Thanks!
//Rasmus

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