Headers already sent in non-admin login

Hi,

I’m a fan of your Plugin Archiver and never had an issue with it. I’m getting this message in a new website, but only when I login with the Editor account. I don’t get any message with my Admin account.

Warning: Invalid argument supplied for foreach() in /home/xxxxxx/public_html/staging.xxxxxx.pt/wp-content/plugins/hackrepair-plugin-archiver/hackrepair-plugin-archiver.php on line 460

Warning: Cannot modify header information - headers already sent by (output started at /home/xxxxxx/public_html/staging.xxxxxx.pt/wp-content/plugins/hackrepair-plugin-archiver/hackrepair-plugin-archiver.php:460) in /home/xxxxxx/public_html/staging.xxxxxx.pt/wp-includes/option.php on line 837

Warning: Cannot modify header information - headers already sent by (output started at /home/xxxxxx/public_html/staging.xxxxxx.pt/wp-content/plugins/hackrepair-plugin-archiver/hackrepair-plugin-archiver.php:460) in /home/xxxxxx/public_html/staging.xxxxxx.pt/wp-includes/option.php on line 838

Any idea on what’s happening here?

Thanks.

álvaro