PnP PowerShell commands for set theme, remove sections of page and uninstall app not working

Question

In the newest version of pnp powershell (1.7.0), I am trying these commands

Changing theme to one of the out of the box ones

Set-PnPWebTheme -Theme "Teal"

But if I use a name of a custom theme I've deployed, it works

Remove sections of the page

$pg = Get-PnPPage -Identity "Home"
$sectionsCount = $pg.Sections.Count
for($i=$sectionsCount-1; $i -ge 0; $i--) {
write-host $i
$pg.Sections.RemoveAt($i)
}
$page = Set-PnPPage -Identity $pg -Publish

Remove an add-in (spfx extension) from a site (not app catalogue)

Uninstall-PnPApp -Identity 150520F1-9488-423C-8006-AC541078B029

But they all do not work. The first one gives a unknown error. The other two does nothing.

Does anyone know what's wrong?

Answer 1

Hi @RS ,
There might be some mistake in your cmdlet
Changing theme to one of the out of the box ones

Set-PnPWebTheme -Theme MyTheme  

or

Get-PnPTenantTheme -Name "MyTheme" | Set-PnPWebTheme  

to set the theme named "MyTheme" to the current web.

Remove sections of the page

$pg = Get-PnPPage -Identity "Home"  
$sectionsCount = $pg.Sections  
for($i=$sectionsCount-1; $i -ge 0; $i--) {  
write-host $i  
$pg.Sections.RemoveAt($i)  
}  
$page = Set-PnPPage -Identity $pg -Publish  

Remove an add-in (spfx extension) from a site (not app catalogue)

Uninstall-PnPApp -Identity 99a00f6e-fb81-4dc7-8eac-e09c6f9132fe  

or

Uninstall-PnPApp -Identity 99a00f6e-fb81-4dc7-8eac-e09c6f9132fe -Scope Site  

It seems your Identity ID format a little different with the example.Please check your app id.

All pnp powershell cmdlets for refer:
https://pnp.github.io/powershell/cmdlets/Uninstall-PnPApp.html

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Answer 2

Tried it. See my exact code

Connect-PnPOnline -Url "https://mysite.sharepoint.com/sites/TestSite" -Interactive
Get-PnPTenantTheme -Name "Teal" | Set-PnPWebTheme

this produces

Get-PnPTenantTheme : Unknown Error
At C:\SPOnline\Templates\clear_site.ps1:19 char:1
+ Get-PnPTenantTheme -Name "Teal" | Set-PnPWebTheme
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : WriteError: (:) [Get-PnPTenantTheme], ServerException
    + FullyQualifiedErrorId : EXCEPTION,PnP.PowerShell.Commands.Admin.GetTenantTheme

Ans for removing sections of the page

Connect-PnPOnline -Url "https://mysite.sharepoint.com/sites/TestSite" -Interactive
$pg = Get-PnPPage -Identity "Home"
$sectionsCount = $pg.Sections.Count
for($i=$sectionsCount-1; $i -ge 0; $i--) {
    write-host $i
    $pg.Sections.RemoveAt($i)
}
$page = Set-PnPPage -Identity $pg -Publish

Disconnect-PnPOnline

It prints out 1 and then 0 (as I have 2 sections on the page). But then If I refresh the page, the sections are still on the page.

And for the last command

Uninstall-PnPApp -Identity 99a00f6e-fb81-4dc7-8eac-e09c6f9132fe -Scope Site

I don't need -Scope Site as that is if the addin comes from a site collection app catalogue. Mine comes from the tenant app catalogue.