相关疑难解决方法(0)

我有以下脚本

Param(
   [string]$vstsAccount = "abc,
   [string]$projectName = "abc",
   [string]$user = "",
   [string]$token = "xyz"
)

# Base64-encodes the Personal Access Token (PAT) appropriately
$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$token)))

$verb = "POST"


$body = @"
{

    "definition": {
         "id": 20
    }
}
"@


$uri = "https://$($vstsAccount).visualstudio.com/DefaultCollection/$($projectName)/_apis/build/builds?api-version=4.1"
$result = Invoke-RestMethod -Uri $uri -Method $verb -ContentType "application/json" -Body (ConvertTo-Json $body)  -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}

但是我得到这个错误

Invoke-RestMethod : {"$id":"1","innerException":null,"message":"This request expects an object in the request body, but the supplied data could not …