No unique_email_id given
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Fatal error: Uncaught Bad Request. Invalid Resource. The resource submitted could not be validated. - email_address : This value should be of type string. Request: PUT https://us5.api.mailchimp.com/3.0/lists/168cf78897/members/d41d8cd98f00b204e9800998ecf8427e {"email_address":{"members":[],"list_id":"168cf78897","total_items":0,"_links":[{"rel":"self","href":"https:\/\/us5.api.mailchimp.com\/3.0\/lists\/168cf78897\/members","method":"GET","targetSchema":"https:\/\/us5.api.mailchimp.com\/schema\/3.0\/Definitions\/Lists\/Members\/CollectionResponse.json","schema":"https:\/\/us5.api.mailchimp.com\/schema\/3.0\/CollectionLinks\/Lists\/Members.json"},{"rel":"parent","href":"https:\/\/us5.api.mailchimp.com\/3.0\/lists\/168cf78897","method":"GET","targetSchema":"https:\/\/us5.api.mailchimp.com\/schema\/3.0\/Definitions\/Lists\/Members\/Response.json"},{"rel":"create","href":"https:\/\/us5.api.mailchimp.com\/3.0\/lists\/168cf78897\/members","method":"POST","targetSchema":"https:\/\/us5.api.mailchimp.com\/schema\/3.0\/Definit in /var/www/html/wp-content/plugins/mailchimp-for-wp/includes/api/class-api-v3-client.php on line 201