Pro version getting new error after update

In the wordpress dashboard the following error appears:

“Warning: Cannot modify header information – headers already sent by (output started at /homepages/40/d113077575/htdocs/sanderson/wp/wp-content/plugins/email-subscribers/includes/class-email-subscribers.php:107) in /homepages/40/d113077575/htdocs/sanderson/wp/wp-admin/includes/misc.php on line 1198”

Also there is a notice:
“Email Subscribers Pro plugin is activated but it won’t work because it needs plugin to be updated. Please update Email Subscribers Pro plugin first.”

Also when looking at the new Audience tab, each column now displays:
“Warning: Illegal string offset ‘es_disposable’ in /homepages/40/d113077575/htdocs/sanderson/wp/wp-content/plugins/email-subscribers-premium/pro/pro-class-email-subscribers.php on line 463”

The non-pro version installed on another wordpress site with same version of WP does not have these errors. Thank you for your needed assistance.

• This topic was modified 7 years, 3 months ago by Drasmussen.
• This topic was modified 7 years, 3 months ago by Drasmussen.

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