That's because strikes by transport workers against the government's pension-reform plan have shut down half of national train services this weekend, with 59% of services expected to be cut on December 23-24, according to Bloomberg. 

French railway company, SNCF, has suspended its unaccompanied minor service, canceling about 6,000 tickets for children this week. Four out of five trains were also suspended in the greater Paris area and the capital's metro system also stopped, with the exception of two automated lines. 

French President Emmanuel Macron urged the unions to come to a truce for the holiday week at the same time public support for the strike during the holiday had fallen to 51%. This is down from 63% just five days prior. However, a poll on Thursday showed 55% of respondents thought the labor unions were "wrong" to strike during the holiday period.