Something went wrong! Could not create….

When I try to import any template, I always get “Something went wrong…” Checked what’s could be reason, in the ajax response there’s an error message:

Notice: wpdb::prepare was called incorrectly. Unsupported value type (array). Please see Debugging in WordPress for more information. (This message was added in version 4.8.2.) in /var/html/wordpress/wp-includes/functions.php on line 5775

I’m not even sure if that’s the reason or in any way related to this plugin! Just sharing my debugging resuluts which could help understand the issue.