Influx read CSV bad request 400

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,
1

I try to make a shellscipt to send data to influx bad give me error 400, data are OK i made the same with python and is working
That is my code:

$measurement = 'disk_test'
$disks = Get-WmiObject Win32_LogicalDisk | Select-Object DeviceID, VolumeName, Size, FreeSpace, FileSystem

$data = @()

foreach ($disk in $disks) {
$point = @{
measurement = $measurement
tags = @{
Instance = $disk.DeviceID
Name = $disk.VolumeName
FileSystem = $disk.FileSystem
Host = $env:COMPUTERNAME
}
fields = @{
Size = $disk.Size
FreeSpace = $disk.FreeSpace
}
}

$jsonData = $data | ConvertTo-Json -Depth 100

Invoke-WebRequest 'http://192.168.1.100:8086/write?db=casadb_wintel' -Method POST -Body $jsonData

Thank you!