Because of Due to the nationwide strike that will take place in France from December 4 to 8, Aeroflot announced the cancellation of some flights on this route.

“In connection with the upcoming nationwide strike in France from 04.12.19 to 08.12.19, Aeroflot is making changes "in the flight schedule on December 6, 2019," the carrier's website said.
Thus, on Friday, flights SU2462 Sheremetyevo - Paris and SU2463 Paris - Sheremetyevo were not operated.
"Passengers will be transported on flights SU2458/SU2459, scheduled to depart at 2:50 PM/5:50 PM on December 6 (local time). The flights will be operated on high-capacity aircraft. Passengers will be notified via the call center, and those arriving for check-in will be provided with all necessary amenities in accordance with Federal Aviation Regulations and Aeroflot standards. Information about schedule changes for December 7, 2019, will be provided later," the carrier's website states.
Moreover, the day before, Aeroflot made changes to its schedule, also canceling flights SU2462 and SU2463.
Source: trn-news.ru