Find-AzureRmResource not recognized

[oviliz]

cd WingtipTicketsSaaS-DbPerTenant\Learning Modules\Provision and Catalog> .\Demo-ProvisionAndCatalog.ps1

After selecting the subscription I'm getting this:

WingtipTicketsSaaS-DbPerTenant\Learning Modules\Provision and Catalog\Demo-ProvisionAndCatalog.ps1 : The term 'Find-AzureRmResource' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the 
name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ .\Demo-ProvisionAndCatalog.ps1
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Demo-ProvisionAndCatalog.ps1

Looks like the script could do with an update, https://docs.microsoft.com/en-us/troubleshoot/azure/general/find-azurermresource-fails