Hi @joeldeteves, there’s a good chance just one of your items (probably not on the first page) doesn’t have the property you are trying to split. Perhaps you can use an IF node before your Item Lists node checking the logs field isn’t empty?
HI @joeldeteves, no problem at all. Tbh, I find this behaviour a bit confusing myself and have suggested changing this internally (as in don’t have the Item Lists node fail if some items don’t contain the field to split out).