Unhandled Exception , when use "getAllOrders()"

[mohamedEssam2]

when i use "getAllOrders()" , i get " Unhandled Exception: type 'Null' is not a subtype of type 'List' in type cast "

shopifyCheckout .getAllOrders(accessToken) .then((value) => { if (value != null) {orderList = value, updateUI()} })