Getting exception for putItem when accessing dynamoDB (local) on windows - amazon-web-services

Question

Started running DynamoDB on my local and below powershell script I'm using to perform a test insert, from the output I see it is able to read the table but fails on putitem operation,
Appreciate any suggestions or references on this, not sure what I'm missing here.
$localEndpoint = 'http://localhost:8000'
$region = 'us-west-2'
$table = Get-DDBTable -TableName test01 -EndpointUrl $localEndpoint
$table
$client = New-Object Amazon.DynamoDBv2.AmazonDynamoDBClient($localEndpoint, $region)
$client
$req = New-Object Amazon.DynamoDBv2.Model.PutItemRequest
$req.TableName = 'test01'
$req.Item = New-Object 'system.collections.generic.dictionary[string,Amazon.DynamoDBv2.Model.AttributeValue]'
$valObj = New-Object Amazon.DynamoDBv2.Model.AttributeValue
$valObj.S = 'MyName'
$req.Item.Add('Name',$valObj)
$req
$client.PutItem($req)
Results with exception:
ArchivalSummary :
AttributeDefinitions : {Name}
BillingModeSummary :
CreationDateTime : 3/11/2022 11:49:44 PM
GlobalSecondaryIndexes : {}
GlobalTableVersion :
ItemCount : 0
KeySchema : {Name}
LatestStreamArn :
LatestStreamLabel :
LocalSecondaryIndexes : {}
ProvisionedThroughput : Amazon.DynamoDBv2.Model.ProvisionedThroughputDescription
Replicas : {}
RestoreSummary :
SSEDescription :
StreamSpecification :
TableArn : arn:aws:dynamodb:ddblocal:000000000000:table/test01
TableId :
TableName : test01
TableSizeBytes : 0
TableStatus : ACTIVE
Config : Amazon.DynamoDBv2.AmazonDynamoDBConfig
ConditionalOperator :
ConditionExpression :
Expected : {}
ExpressionAttributeNames : {}
ExpressionAttributeValues : {}
Item : {[Name, Amazon.DynamoDBv2.Model.AttributeValue]}
ReturnConsumedCapacity :
ReturnItemCollectionMetrics :
ReturnValues :
TableName : test01
StreamUploadProgressCallback :
RequestState : {}
UseSigV4 : False
Exception calling "PutItem" with "1" argument(s): "Credential must have exactly 5 slash-delimited elements, e.g. keyid/date/region/service/term, got 'http://localhost:8000/20220312/us-west-2/dynamodb/aws4_request'"
At line:19 char:1
+ $client.PutItem($req)
+ ~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : AmazonDynamoDBException