I am facing a weird issue in regards to the PowerShell script I am using to import terms from CSV into a termset called Season. Source:http://www.sharepointdiary.com/2016/11/sharepoint-online-import-terms-to-termset-using-powershell.html
Below is the script:
#Load SharePoint CSOM Assemblies Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll" Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll" Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Taxonomy.dll" #Variables for Processing $AdminURL = "https://ignol-admin.sharepoint.com/" $TermGroupName= "Site Collection - ignol.sharepoint.com-sites-testlpac" $TermSetName="Season" $CSVFile ="C:\Users\dm\Desktop\Sampleterm.csv" $TermHeaderInCSV ="Season" Try { #Get Credentials to connect $Cred = Get-Credential $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password) #Setup the context $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($AdminURL) $Ctx.Credentials = $Credentials #Get the term store $TaxonomySession=[Microsoft.SharePoint.Client.Taxonomy.TaxonomySession]::GetTaxonomySession($Ctx) $TaxonomySession.UpdateCache() $TermStore =$TaxonomySession.GetDefaultSiteCollectionTermStore() $Ctx.Load($TaxonomySession) $Ctx.Load($TermStore) $Ctx.ExecuteQuery() #Get Termstore data from CSV and iterate through each row Import-Csv $CSVFile | ForEach-Object { #Get the Term Group $TermGroup=$TermStore.Groups.GetByName($TermGroupName) #Get the term set $TermSet = $TermGroup.TermSets.GetByName($TermSetName) #CSV File Header Row in Term to Add $TermName = $_.$($TermHeaderInCSV) #Check if the given term exists already $Terms = $TermSet.Terms $Ctx.Load($Terms) $Ctx.ExecuteQuery() $Term = $Terms | Where-Object {$_.Name -eq $TermName} If(-not $Term) { #Create Term Set Write-host "Creating Term '$TermName'" -ForegroundColor Cyan $Term = $TermSet.CreateTerm($TermName,1033,[System.Guid]::NewGuid().toString()) $Ctx.Load($Term) $Ctx.ExecuteQuery() $Term.TermStore.CommitAll() $TaxonomySession.UpdateCache() Write-host "New Term '$TermName' Added Successfully!" -ForegroundColor Green } else { Write-host "Term '$TermName' Exists Already!" -ForegroundColor Yellow } } } Catch { write-host -f Red "Error Importing Term store Data!" $_.Exception.Message } Below is the error screenshot. I just don't understand why it says access denied, I am the site collection admin. 
Below is the CSV file screenshot.
Below is the term store screenshot.
Can someone please help me fix the error. Thanks in advance.
