I believe I've answered my own question. There is a previous Avis for a blockage further south.
"Due to the lack of water resources, ladies and gentlemen, users of the waterway are informed of the stoppage of navigation at lock 14 on the Moselle side of the climb from Golbey to lock 24 on the Saône d'Harsault from Tuesday June 16, 2023 at 11 a.m. A new notice will inform you of any changes in the situation."