Only 18 drivers on the grid in Spain
Following Lance Stroll's withdrawal from the race, the FIA indicated that a driver would start from the pits for a set-up change under the Parc Fermé regime.

No second driver withdrawal. But a driver penalized. Following Aston Martin’s announcement regarding Lance Stroll’s withdrawal from the Spanish Grand Prix, the FIA stewards have indicated that a driver has just been sanctioned.
During the pre-race technical checks, it turned out that Yuki Tsunoda had changed his suspension settings under Parc Fermé conditions. Such modifications are prohibited by the regulations.
As a result, the Japanese driver will have to start from the pit lane. Therefore, there will only be eighteen cars on the starting grid at 3 PM.
This penalty changes little for the Red Bull driver, who could not do better than the twentieth and last time during qualifying.