Report issues azure fileshare

Hi Dear 

I need download a report of usage fileshare storage account Azure but the report always show empti the csv i need know all files and size and export to excell, Can I helpme please.

I using a PS with the nex script:

Install-Module -Name ImportExcel -Force -AllowClobbe
##parametros de entrada
$resourceGroupName = "MyResourcegroup"
$storageAccName = "Mystorageaccname"
$fileShareName = "Myfsname"
$directoryPath = "Mypath"
##Customer tenant id
$customerTenantId = "###################98b"
##Subscription ID
Set-AzContext -SubscriptionId "###################################32a"
Import-Module ImportExcel
##Funcion para listar directorios
Function GetFiles {
Write-Host -ForegroundColor Green "Listing directories and files with sizes in MB.."
# Get the storage account context
$ctx = (Get-AzStorageAccount -ResourceGroupName $resourceGroupName -Name $storageAccName).Context
# Create an array to store file details
$fileDetails = @()
# List directories
$directories = Get-AZStorageFile -Context $ctx -ShareName $fileShareName
# Loop through directories
foreach ($directory in $directories) {
Write-Host -ForegroundColor Magenta "Directory Name: $($directory.Name)"
# Add directory details to the array
$fileDetails += [PSCustomObject]@{
DirectoryName = $directory.Name
FileName = $null # Placeholder for files
Size_MB = $null # Placeholder for file size in MB
}
# List files in the current directory
$files = Get-AZStorageFile -Context $ctx -ShareName $fileShareName -Path $directory.Name | Get-AZStorageFile
# Loop through files
foreach ($file in $files) {
# Convert size to MB
$sizeInMB = [math]::Round($file.Length / 1MB, 2)
# Add file details to the array
$fileDetails += [PSCustomObject]@{
DirectoryName = $directory.Name
FileName = $file.Name
Size_MB = $sizeInMB
}
}
}
# Get the current date in the specified format
$currentDateTime = Get-Date -Format "yyyyMMdd_HHmmss"
# Specify the new export path with file share name and current date with time as the suffix
$exportPath = "C:\temp\Downloads\lnt$fileShareName_$currentDateTime.xlsx"
# Export to Excel
$fileDetails | Export-Excel -Path $exportPath -AutoSize -Show
Write-Host "Excel exported to: $exportPath"
}

##Llamar la funcion
GetFiles