It looks like the first scheduled action is completing successfully, so the campaign itself is working. The error āError retrieving template for the email campaignā suggests that when the next batch is processed, SuiteCRM can no longer access the email template associated with the campaign.
A few things Iād check:
Make sure the email template still exists and hasnāt been deleted or modified.
Verify that all scheduled campaign actions reference the same valid template ID.
Run the Scheduler (Cron) manually and check if the error appears again.
If the emails are stuck in the queue, you may need to clear the campaign queue entries from the database or rebuild the campaign after fixing the template reference.
If this is SuiteCRM 8.9.3, it could also be worth checking whether this is a known issue with scheduled campaign actions. Has anyone else experienced the same behavior on this version?