You tried going to https://sabinekronenberger.com/nachhaltige-events-in-wiesbaden-und-umgebung/oeforma-veranstaltungen/144-franz-alt-auf-der-buehne-im-museum-wiesbaden?tmpl=component&print=1&layout=default
, and it doesn't exist. All is not lost! You can search for what you're looking for.