我尝试了以下代码，当我使用消息调用“providerClient.SignUpAsync”时出现异常
无法存储密钥 CognitoIdentity:IdentityId:us-east-1:d8dce20b-7e3a-454a-afe5-xxxxxxxxxxxx，出现错误：-34018
我无法找到在代码中指定“userpool id”的方法，我无法理解我在这里做错了什么。如果有人可以在这里帮助我告诉我我在这里做错了什么，我将不胜感激。
CognitoAWSCredentials credentials = new CognitoAWSCredentials(
"us-east-1:d8dce20b-7e3a-454a-afe5-xxxxxxxxxxxx",
RegionEndpoint.USEast1
);
AmazonCognitoIdentityProviderClient providerClient = new AmazonCognitoIdentityProviderClient(credentials,RegionEndpoint.USEast1);
SignUpRequest sr = new SignUpRequest();
sr.ClientId = "71tu9de9v6murgolfxxxxxxxxx";
sr.Username = email;
sr.Password = password;
sr.SecretHash = "1b7i7kdjcdij03309j0354d8tubo62it33gj4ulkxxxxxxxxxxxx";
sr.UserAttributes = new List<AttributeType> {
new AttributeType
{
Name = "email",
Value = email,
},
new AttributeType
{
Name = "phone_number",
Value = phone,
}
};
try{
SignUpResponse result = await providerClient.SignUpAsync(sr);
}