Amazon Lex Speech Permissions
If you are planning to include speech recognition features in your Amazon Lex enabled chatbot you should add a specific policy to the role against which you are executing your command .
Basically you need to give rights to Amazon Polly to your specific role .
The screenshot below shows what you need to add.
Content:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AllowAllPollyActions",
"Effect": "Allow",
"Action": [
"polly:*"
],
"Resource": "*"
}
]
}