该问题可能是由于Lambda无法扮演其所需的IAM角色而引起的。我们可以通过以下几个步骤修复这个问题:
{
"Statement": [
{
"Effect": "Allow",
"Action": [
"lambda:InvokeFunction"
],
"Resource": [
"*"
]
}
],
"RoleARN": "arn:aws:iam::123456789012:role/service-role/MyRole"
}