I resolved this like that
...
pub struct Config {
name: str[32],
symbol: str[8],
decimals: u8,
}
storage {
config: Config = Config {
name: " ",
symbol: " ",
decimals: 1u8,
},
owner: Address = Address {
value: ZERO_B256,
},
mint_amount: u64 = 0,
mint_list: StorageMap<Address, bool> = StorageMap {},
}
...
#[storage(read)]
fn config() -> Config {
storage.config
}
...