Runtime Exception on Export to PDF about opus

[facundofarias]

Hello @1papaya,

It seems to be that it works in Windows, but not Linux/OSX.
The change I did to make it work was:

Add the dependency "h4cc/wkhtmltopdf-amd64": "0.12.3" in the composer.json file, and then in the file wiki/config/snappy.php, use the following setting:

    'pdf' => array(
        'enabled' => true,
        'binary' => base_path('vendor/h4cc/wkhtmltopdf-amd64/bin/wkhtmltopdf-amd64'),
        'timeout' => false,
        'options' => [],
        'env'     => [],
    ),

Hope it helps!