UberEats - No Delivery Agents

I made an order for KFC via the UberEats App yesterday evening. The order was cancelled (Order 525CD) at 19h19, over an hour after I placed the order. I made another order almost immediately (Order BB2BF) and this order was cancelled at 20h34 - also over an hour of the initial order. In total this accumulated to 2 and a half hours of waiting for an order. I then drove to the KFC where I placed the order and the cashier mentioned that the order was cancelled by Uber as no delivery drivers arrived. It was also too late to make an instore order. This is absolutely unacceptable. It's the night before a public holiday and therefore people are naturally ordering take away food. Uber HAS to rather alert customers ahead of time that there are no delivery drivers in the area. The area concerned is a busy area and so it makes no sense that at 6pm in the evening there are no drivers available.