Could not fetch Highcharts module (solid-gauge.js)

I'm experiencing an issue where node-export-server fails to fetch the Highcharts module solid-gauge.js during PDF generation. The error message is:

`
Could not fetch the https://code.highcharts.com/modules/solid-gauge.js. The script might not exist in the requested version.
`

However, when I open the URL in a browser, the file is accessible without issues. This suggests that the problem might be related to how the fetch request is being handled inside the server or Docker environment.