Ok this site recently got switched form a modern site to a classic site and now I cannot use anything on the site to include turning on and off features with powershell. This is a sharepoint online site with office 365 permissions. I used to be able to use powershell on this site but now i am only getting a 403 error. Any help would be greatly appreciated.
Note: This error was specific to a single site collection. I was able to run all pnp commands on other site collections.
I enter the URl and credentials without fail, but the minute I run
Get-PnPProvisioningTemplate -Out "example-Template.xml"
Set-PnPList -Identity "Some Library" -ForceCheckout $false
I will get the following error
Set-PnPList : The remote server returned an error: (403) Forbidden. At line:1 char:1 + Set-PnPList -Identity "Some Library" -ForceCheckout $false + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : WriteError: (:) [Set-PnPList], WebException + FullyQualifiedErrorId : EXCEPTION,PnP.PowerShell.Commands.Lists.SetList
I ran the log against it also and got this error in line one
powershell.exe Error: 0 : 2020-09-16 08:03:52.1674 [OfficeDevPnP.Core]  [Error] ExecuteQuery threw following exception: System.Net.WebException: The remote server returned an error: (403) Forbidden. at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)