What I meant by this line is that you should import SinglePageExporter from somewhere. If you're using the bundle, you should try this:

import { SinglePageExporter } from 'bryntum-gantt'

Hello,
feel free to modify this according to your needs. You can find MPXJ documentation here: http://www.mpxj.org/apidocs/

Hello.
Reproduced, ticket opened here: https://app.assembla.com/spaces/bryntum/tickets/9628
Thank you for report

Thank you for input, I opened ticket to check if we can find better base docker image: https://github.com/bryntum/support/issues/1606

Here is a correct link to the issue: https://github.com/bryntum/support/issues/1605