I’ve tried your table schema, PHPMaker does not know the uuid() as a function and consider it as string “uuid()”, the field is therefore not detected as auto, so you need to:
Remove the default value “uuid()” from the “Add Page” → “Default Value” column in the Field Setup page,
Uncheck the field from Add page (no need to fill),
Use Row_Inserting server event to set the value, e.g. $rsnew[“eee”] = NewGuid();.