Get-PnPProvisioningTemplate Exception Could not load one or more request types

Hi,

I try to generate a provisioning template from a clean Site Collection on O365.

It's a Publishing Site without workflow, with some custom Site Content Types and Columns (simple type of columns, no calculated, lookup, managed metadata).

No customization as branding or workflow, and zero custom lists or library.

PowerShell script (with only method Get-PnPProvisioningTemplate) crashes with message "Could not load one or more request types" (or similar, the message is in italian language, I translated it)

Version of SharePoint Online Client SDK is the same (latest) of SharePoint Online Management Shell and I use latest SharePoint PnP PowerShell Command Module for Online.

I use SharePoint tenant administrator credentials (not Global tenant admin).

In trace log settings, last message is about saved xxxx.it-IT.resx file in folder.

Then, exception.

What can I do to understand exception?

Thank you!