Some issues with eSAAM 2023 webpages

Hi WebDev team,
Some pages on https://www.eclipse.org/events/2023/esaam2023/ seem to be broken.
For example when I click on “Rolf Riemenschneider” on the Speakers section , I get a 404 error page: https://www.eclipse.org/2023/esaam2023/speakers/#rolf_riemenschneider
But when I click on the same name from the agenda, I get https://www.eclipse.org/events/2023/esaam2023/speakers/#rolf_riemenschneider w/o pictures.
Thx a lot for your help

/cc @oliviergoulet