Error with the Get-DanglingDnsRecords script when running against multiple azure subscriptions

Error with the **Get-DanglingDnsRecords** script when running against multiple azure subscriptions.

Link:
(https://github.com/Azure/Azure-Network-Security/tree/master/Cross%20Product/DNS%20-%20Find%20Dangling%20DNS%20Records)

Get-DanglingDnsRecords : Method invocation failed because [System.Management.Automation.PSObject] does not contain a
method named 'op_Addition'.
At line:1 char:1
+ Get-DanglingDnsRecords -FetchDnsRecordsFromAzureSubscription -Verbose
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (op_Addition:String) [Get-DanglingDnsRecords], RuntimeException
+ FullyQualifiedErrorId : MethodNotFound,Get-DanglingDnsRecords

**Reproduce**
Steps to reproduce the behavior:
Install-Module -Name AzDanglingDomain -Scope CurrentUser
Import-Module -Name AzDanglingDomain -Force
Get-DanglingDnsRecords -FetchDnsRecordsFromAzureSubscription

**Expected behavior**
No errors when adding elements to array when there are more than one subscriptions.

**Environment- if applicable**
$PSVersionTable

Name Value
---- -----
PSVersion 5.1.22621.2506
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.22621.2506
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

**Desktop (please complete the following information if applicable):**
- OS: Win 11