Get-PnPProvisioningTemplate throws Access Denied error

I am running below command in SharePoint Online Management Shell as administrator to get PnP Provisioning Template from a site collection in SharePoint online.

Get-PnPProvisioningTemplate -out Lists.xml -Handlers Lists

It throws following error in PowerShell  window:

"Access denied.You do not have permission to
perform this action or access this resource."

I have checked following things:

1. User I am running with PowerShell is a site collection administrator.

2. Permission is not broken for any lists.

3. Above command runs with handlers fields and contenttypes.

4. No list has any item/document/page checked out. All data is checked in with major version published.