Workflow with error if date type fields are empty

How do I avoid the “invalid timestamp format” error using when saving a record when the client leaves date fields blank?
Via workflow, is there no way to record a record with a null date field?
My field is already set to allow null values. If I create a record in Xano itself, with blank dates, it is created normally, it only gives an error when I use Bubble’s workflow.
Thank you!

Hey, Use the “first_notempty” filter in Xano. This should allow you to pass empty value without error.