info: Executing script in visual studio - 'C:\sf-cli-win-x86\PowerShell\Updater.ps1'
info: Waiting for operation to complete...
fail: Error occured while upgrading nuget packages. fail - The path is not of a legal form.Check the C:\sf-cli-win-x86\PowerShell\upgrade.log for more details
fail: Upgrade failed
What is causing this error?