Enabling funders section on about page is missing

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The enabling funders section on the about page is missing. I suppose that can be explained by this part of the source code (pretty printed and slightly shortened):

<div 
  data-include="common/acknowledgements/funders.html"
  [...] 
  title="`data-include` failed: `common/acknowledgements/funders.html` (Failed to fetch)." 
  id="respec-offender-data-include-failed-common-acknowledgements-funders-html-failed-to-fetch"
></div>