It used to work and the image of the coin was displayed, but for several days this error is displayed instead of the image of the coins.

FutureBuilder(
future:
getCoinDataDogeCoin(),
builder: (context,
AsyncSnapshot<
CoinGeckoResult<
prefix
.Coin?>>
snapshot) {
return (snapshot
.hasData)
? Center(
child: Image
.network(
"${snapshot.data!.data!.image!.small}"),
)
: CircularProgressIndicator();
}),


As error , it is getting null data and you are using
!. Try checking if the value is null or notHere we are accepting null with
?and using!after checking not null.