To Create a Content Type using PnP PowerShell, you need to use the command like given below:
Add-PnPContentType -Name "Project Document" -Description "Use for Contoso projects" -Group "Contoso Content Types" -ParentContentType $ct
Check below article for syntax and list of parameters and their description:
For official documentation ...
You can troubleshoot as following:
Deactivate and re-activate the publishing feature and check again.
Go to SharePoint Designer to open this top level site->Lists and Libraries, check if you can view the Pages library.
If you can view the Pages library in SharePoint Designer, try to deactivate the publishing feature, delete the Pages library in SharePoint ...
No it is not possible. You should treat your InfoPath templates as source code and check in changes to a source control system. You should also at least have one other farm for testing.
In case something breaks, and it will, you can revert back to last version.
Good news! The July 2019 CU for SharePoint 2019 finally fixes this misbehaviour. Blob cache now works for SharePoint Server 2019 as it is supposed to.
Check the details: