Sendy Campaign Failed to Send
Please disable 'ONLY_FULL_GROUP_BY' from 'sql_mode'
We have detected that 'ONLY_FULL_GROUP_BY' is enabled in 'sql_mode' in your MySQL server. Your campaign will fail to send unless 'ONLY_FULL_GROUP_BY' is removed from 'sql_mode'. Here's how to fix this → https://sendy.co/troubleshooting#ubuntu-campaign-sent-to-0-recipients-and-or-autoresponders-not-sending
The solution for this is to disable MySQL strict mode on your server. I've disabled it for you. Please check and confirm if it's working now.
For anyone who's having similar issue with Sendy, please disable MySQL strict mode to fix it.