Polly boto3 exception: The security token included in the request is invalid

I want to use Amazon Polly with boto3 for TTS with Ssml support.

When I try to run this code, I get the error
botocore.exceptions.ClientError: An error occurred (UnrecognizedClientException) when calling the SynthesizeSpeech operation: The security token included in the request is invalid.

import boto3

# AWS credentials
session = boto3.Session(
    aws_access_key_id='xxx',
    aws_secret_access_key='xxxxx',
    region_name='eu-north-1'
)

# Initialize Polly client
polly_client = session.client('polly')
# Synthesize speech
response = polly_client.synthesize_speech(
    Text='Hello, this is a sample text.',
    OutputFormat='mp3',
    VoiceId='Joanna'  # Specify voice to use
)

# Save synthesized audio to a file
with open('output.mp3', 'wb') as file:
    file.write(response['AudioStream'].read())

I checked the keys and if the region is enabled in my account.

I found this but since I didn't download the Aws CLI, I don't have a .aws folder in %USERPROFILE%\.aws\credentials.

Do I really need to download and set up the Aws CLI?

Thanks for the help

I used the wrong login lol. I used the account-id and user-id from the account detailes instead of creating a key.