JIRA Cloud API GET请求-适用于Postman，但不适用于Powershell

Question

我能够在Postman中成功地从Jira执行GET请求，但是由于身份验证错误而无法在Powershell中发出相同的请求。我知道我的凭据是正确的，因为存在成功的或GET请求。我的猜测是，它与URL（https://arnold.jira.com / admin / rest / um / 1 / user ）有关。

由于我知道我的凭据是正确的，因此我不确定我还能尝试什么。

# Create a new session using the Jira REST API

$user = 'john.rambo@arnold.com'
$pass = '8675309'
$pair = "$($user):$($pass)"
$encodedCreds = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($pair))
$basicAuthValue = "Basic $encodedCreds"
$Headers = @{
 Authorization = $basicAuthValue;
 Accept = 'application/json'
}

# Perform the GET Request 

$UserEmail = 'dolf.lundgren@arnold.com'
$UserAttributeLink = 'https://arnold.jira.com/admin/rest/um/1/user?email=' + $UserEmail + '&expand=attributes'
$UserAttributes = Invoke-RestMethod ($UserAttributeLink) -Headers $Headers -Method GET -ContentType "application/json" 

我希望返回信息，但遇到此错误：

Invoke-RestMethod : User failed to authenticate
At line:12 char:19
+ ... ttributes = Invoke-RestMethod ($UserAttributeLink) -Headers $Headers  ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidOperation: (Method: GET, Reques\u2026PowerShell/6.2.1
}:HttpRequestMessage) [Invoke-RestMethod], HttpResponseException
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand