My $OFS is set to "|||". When I run Export-AzViz, I get the following error:

Error: : syntax error in line 1 near '|'

Export-PSGraph: C:\Users...\PowerShell\Modules\AzViz\1.2.1\src\public\Export-AzViz.ps1:274
Line |
274 | "@ | Export-PSGraph -ShowGraph:$Show -OutputFormat $OutputFormat -Des …
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| System error.

If I change my $OFS back to " " like a default install, then it works. Issue looks to be that $graph is an array. Fix should be doing something like $($graph -join ' ') instead.