Plugin Notice – Array on WPDB::Prepare

Hello,

I’ve been consistently getting the following PHP notice when using wp_mail() with this plugin installed.

PHP Notice: Function wpdb::prepare was called incorrectly. Unsupported value type (array). …for more information. (This message was added in version 4.8.2.) in /wp-includes/functions.php on line 5905

It looks like it’s coming from wpdb::insert() via /post-smtp/Postman/PostmanEmailLogs.php(261) – here’s the error trace I put into place:

#0 /wp-includes/class-wpdb.php(2689): wpdb->prepare()
#1 /wp-includes/class-wpdb.php(2601): wpdb->_insert_replace_helper()
#2 /wp-content/plugins/post-smtp/Postman/PostmanEmailLogs.php(261): wpdb->insert()
#3 /wp-content/plugins/post-smtp/Postman/Postman-Email-Log/PostmanEmailLogService.php(186): PostmanEmailLogs->save()
#4 /wp-content/plugins/post-smtp/Postman/Postman-Email-Log/PostmanEmailLogService.php(113): PostmanEmailLogService->writeToEmailLog()
#5 /wp-content/plugins/post-smtp/Postman/Postman-Email-Log/PostmanEmailLogService.php(85): PostmanEmailLogService->writeSuccessLog()
#6 /wp-includes/class-wp-hook.php(310): PostmanEmailLogService->write_success_log()
#7 /wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters()
#8 /wp-includes/plugin.php(517): WP_Hook->do_action()
#9 /wp-content/plugins/post-smtp/Postman/PostmanWpMail.php(262): do_action()
#10 /wp-content/plugins/post-smtp/Postman/PostmanWpMail.php(60): PostmanWpMail->sendMessage()
#11 /wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php(121): PostmanWpMail->send()