Signage modernization work was carried out overnight from Saturday to Sunday and was due to end at 5:00 a.m. on Sunday. However, a computer problem arose. It was identified but had to be resolved, which prevented the signaling from being put back into service, said Frédéric Sacré, spokesperson for Infrabel.
The stations of Chênée, Trooz, Fraipont, Nessonvaux, Pepinster, Verviers, Dolhain, Welkenraedt, Eupen and Hergenrath could not be served. International traffic, which takes another line (line 3, high speed) was not affected.