BARCELONA, SPAIN - FEBRUARY 16: Lionel Messi of FC Barcelona reacts after conceding their fourth goal during the UEFA Champions League Round of 16 match between FC Barcelona and Paris Saint-Germain at Camp Nou on February 16, 2021 in Barcelona, Spain. Sporting stadiums around Spain remain under strict restrictions due to the Coronavirus Pandemic as Government social distancing laws prohibit fans inside venues resulting in games being played behind closed doors. (Photo by David Ramos/Getty Images)