AmazonBedrockGenerator unable to return output

[sahil-invent]

Describe the bug
The Amazon Bedrock Generator and Chat Generator produces an error when running inference. I think its failing to invoke the model.

To Reproduce
To reproduce the error:
After installing haystack-ai and importing the Amazon Bedrock Generator.
Initialise AWS_ACCESS_KEY, AWS_SECRET_ACCESS_KEY, AWS_DEFAULT_REGION as global variables.
AWS_DEFAULT_REGION is set to 'eu-west-2'

Run:
generator = AmazonBedrockGenerator(model="anthropic.claude-3-sonnet-20240229-v1:0")
result = generator.run("Who is the best American actor?")
for reply in result["replies"]:
print(reply)

Error produced:
TypeError: sequence item 0: expected str instance, NoneType found
from Line 208 in .haystack_integrations/components/generators/amazon_bedrock/generator.py

Describe your environment (please complete the following information):

• OS: macOS Sonoma 14.5
• Haystack version: haystack-ai 2.2.1
• Integration version: amazon-bedrock-haystack 0.9.0

Happy to add more details if needed.

[anakin87]

This code works for me.

import os
from haystack_integrations.components.generators.amazon_bedrock import AmazonBedrockGenerator


os.environ["AWS_ACCESS_KEY_ID"]="..."
os.environ["AWS_SECRET_ACCESS_KEY"]="..."
os.environ["AWS_DEFAULT_REGION"]="eu-west-3"

generator = AmazonBedrockGenerator(model="anthropic.claude-3-sonnet-20240229-v1:0")
result = generator.run("Who is the best American actor?")
print(result)

Please note that not all models are supported in all AWS regions. -> Detailed information

[sahil-invent]

Apologies was typo in declaring the 'AWS_ACCESS_KEY_ID' where I didn't include the '_ID'. Thanks for your help!