How can I create a site using Pnp.core - sharepoint-online

Question

I am trying to crate a site using . This is the code:
using PnP.Framework;
TeamSiteCollectionCreationInformation modernteamSiteInfo = new TeamSiteCollectionCreationInformation
{
Description = siteDescription,
DisplayName = siteTitle,
Alias = siteUrl.AbsoluteUri,
IsPublic = true,
Lcid = (uint)lcid,
};
var createModernSite = await clientContext.CreateSiteAsync(modernteamSiteInfo);
I am not really sure how to initiate the ClientContext because I think it should use https://tenant-admin.sharepoint.com. How can I get the ClientContext object?
I tried to use the same object from the current ClientContext, but I got this error message:
App-Only is currently not supported, unless you provide a Microsoft
Graph Access Token.. StackTrace: at
PnP.Framework.Sites.SiteCollection.CreateAsync(ClientContext
clientContext, TeamSiteCollectionCreationInformation
siteCollectionCreationInformation, Int32 delayAfterCreation, Int32
maxRetryCount, Int32 retryDelay, Boolean noWait, String
graphAccessToken, AzureEnvironment azureEnvironment) at
Microsoft.SharePoint.Client.ClientContextExtensions.CreateSiteAsync(ClientContext
clientContext, TeamSiteCollectionCreationInformation
siteCollectionCreationInformation)

Answer 1

You can Create Sharepoint site using pnp core sdk like this.Before that You need to authentication for your application.
var context = await _pnpContextFactory.CreateAsync("Default");
var teamSiteToCreate = new TeamSiteOptions("Demo", "Demo")
{
Description = "My site description",
Language = Language.English,
Owners = new string[] { "test#xyz.onmicrosoft.com" },
};
SiteCreationOptions siteCreationOptions = new SiteCreationOptions()
{
UsingApplicationPermissions = true
};
var create = await context.GetSiteCollectionManager().CreateSiteCollectionAsync(teamSiteToCreate, siteCreationOptions);
return Ok(Create.Uri);