Tennis - ATP 500 - Hamburg European Open - Am Rothenbaum, Hamburg, Germany - September 23, 2020 Germany's Yannick Hanfmann in action during his second round match against Chile's Cristian Garin REUTERS/Fabian Bimmer

Tennis - ATP 500 - Hamburg European Open - Am Rothenbaum, Hamburg, Germany - September 23, 2020 Germany's Yannick Hanfmann in action during his second round match against Chile's Cristian Garin REUTERS/Fabian Bimmer

Volkswagen Group Chief Executive Officer Herbert Diess bumps elbows with Wayne Griffiths as they attend a news conference to announce Griffiths' appointment as the new president of Volkswagen's Spanish brand SEAT, in Barcelona, Spain September 23, 2020. REUTERS/Albert Gea

People walk next to a testing site at the Fiumicino Airport, after Italy made testing compulsory for travellers from parts of France that have a high number of the coronavirus disease (COVID-19) cases, in Rome, Italy, September 23, 2020. REUTERS/Remo Casilli

Volkswagen Group Chief Executive Officer Herbert Diess gestures as he speaks during a news conference to announce the appointment of Wayne Griffiths as the new president of Volkswagen's Spanish brand SEAT, in Barcelona, Spain September 23, 2020. REUTERS/Albert Gea

A health worker holds a swab stick at the Fiumicino Airport, after Italy made testing compulsory for travellers from parts of France that have a high number of the coronavirus disease (COVID-19) cases, in Rome, Italy, September 23, 2020. REUTERS/Remo Casilli

A demonstrator holds a placard outside the Nigerian embassy during a protest against crime organised by South African organisation Action for Change (AFC), in Pretoria, South Africa, September 23, 2020. REUTERS/Siphiwe Sibeko

A student wears a protective mask maintaining safe distance along with others before entering a class, after government allowed reopening of schools from grade six to eight amid the coronavirus disease (COVID-19) pandemic, in Peshawar, Pakistan September 23, 2020. REUTERS/Fayaz Aziz

Wayne Griffiths attends a news conference to announce his appointment as the new president of Volkswagen's Spanish brand SEAT, in Barcelona, Spain September 23, 2020. REUTERS/Albert Gea

Volkswagen Group Chief Executive Officer Herbert Diess bumps elbows with Wayne Griffiths as they attend a news conference to announce Griffiths' appointment as the new president of Volkswagen's Spanish brand SEAT, in Barcelona, Spain September 23, 2020. REUTERS/Albert Gea

A worker cuts metal poles at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Students wear protective masks maintaining safe distance as they attend a class, after government allowed reopening of schools from grade six to eight amid the coronavirus disease (COVID-19) pandemic, in Peshawar, Pakistan September 23, 2020. REUTERS/Fayaz Aziz

A man welds pipes at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A general view shows the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Workers leave the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Wayne Griffiths arrives for a news conference to announce his appointment as the new president of Volkswagen's Spanish brand SEAT, in Barcelona, Spain September 23, 2020. REUTERS/Albert Gea

Students wear protective masks maintaining safe distance as they get their hands sanitized before entering a class, after government allowed reopening of schools from grade six to eight amid the coronavirus disease (COVID-19) pandemic, in Peshawar, Pakistan September 23, 2020. REUTERS/Fayaz Aziz

Students wear protective masks maintaining safe distance before entering a class, after government allowed reopening of schools from grade six to eight amid the coronavirus disease (COVID-19) pandemic, in Peshawar, Pakistan September 23, 2020. REUTERS/Fayaz Aziz

Tennis - ATP 500 - Hamburg European Open - Am Rothenbaum, Hamburg, Germany - September 23, 2020 A volunteer is pictured wearing a protective face mask during the Hamburg Open REUTERS/Fabian Bimmer

Tennis - ATP 500 - Hamburg European Open - Am Rothenbaum, Hamburg, Germany - September 23, 2020 France's Benoit Paire in action during his first round match against Norway's Casper Ruud REUTERS/Fabian Bimmer

Students wear protective masks as they have their temperature checked before entering a class, after government allowed reopening of schools from grade six to eight amid the coronavirus disease (COVID-19) pandemic, in Peshawar, Pakistan September 23, 2020. REUTERS/Fayaz Aziz

German Health Minister Jens Spahn attends a news conference to give an update on a smartphone app that allows users to evaluate their risk of being exposed to the coronavirus in Berlin, Germany, September 23, 2020. Bernd von Jutrczenka/Pool via REUTERS

German Health Minister Jens Spahn attends a news conference to give an update on a smartphone app that allows users to evaluate their risk of being exposed to the coronavirus in Berlin, Germany, September 23, 2020. Bernd von Jutrczenka/Pool via REUTERS

German Health Minister Jens Spahn attends a news conference to give an update on a smartphone app that allows users to evaluate their risk of being exposed to the coronavirus in Berlin, Germany, September 23, 2020. Bernd von Jutrczenka/Pool via REUTERS

German Health Minister Jens Spahn attends a news conference to give an update on a smartphone app that allows users to evaluate their risk of being exposed to the coronavirus in Berlin, Germany, September 23, 2020. Bernd von Jutrczenka/Pool via REUTERS

Chief Technology Officer (CTO) of SAP Juergen Mueller, Minister of State at the Chancellery for Digitalization Dorothee Baer, German Chief of Staff Helge Braun, German Health Minister Jens Spahn and CEO of Deutsche Telekom Timotheus Hoettges arrive for a news conference to give an update on a smartphone app that allows users to evaluate their risk of being exposed to the coronavirus in Berlin, Germany, September 23, 2020. Bernd von Jutrczenka/Pool via REUTERS

Chief Technology Officer (CTO) of SAP Juergen Mueller, Minister of State at the Chancellery for Digitalization Dorothee Baer, German Chief of Staff Helge Braun, German Health Minister Jens Spahn and CEO of Deutsche Telekom Timotheus Hoettges arrive for a news conference to give an update on a smartphone app that allows users to evaluate their risk of being exposed to the coronavirus in Berlin, Germany, September 23, 2020. Bernd von Jutrczenka/Pool via REUTERS

A health worker is seen at the Fiumicino Airport, after Italy made testing compulsory for travellers from parts of France that have a high number of cases, in Rome, Italy, September 23, 2020. REUTERS/Remo Casilli

EU chief negotiator Michel Barnier wearing a protective mask adjusts the seatbelt as he arrives for the EU-Brexit talks in London, Britain September 23, 2020. REUTERS/Hannah McKay

EU chief negotiator Michel Barnier wearing a protective mask arrives for the EU-Brexit talks in London, Britain September 23, 2020. REUTERS/Hannah McKay

Demonstrators hold placards outside the Nigerian embassy during a protest against crime organised by South African organisation Action for Change (AFC), in Pretoria, South Africa, September 23, 2020. REUTERS/Siphiwe Sibeko

German Interior Minister Horst Seehofer leaves following speeches after German President Frank-Walter Steinmeier met with relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier and his wife Elke Buedenbender listen to speeches after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier and his wife Elke Buedenbender listen to speeches after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

People are seen along an airport corridor, after Italy made testing compulsory for travellers from parts of France that have a high number of cases, at the Fiumicino Airport in Rome, Italy, September 23, 2020. REUTERS/Remo Casilli

German President Frank-Walter Steinmeier and his wife Elke Buedenbender listen to speeches after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German Interior Minister Horst Seehofer listens to a speech of German President Frank-Walter Steinmeier after he met with relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German Interior Minister Horst Seehofer listens to a speech of German President Frank-Walter Steinmeier after he met with relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German Interior Minister Horst Seehofer listens to a speech of German President Frank-Walter Steinmeier after he met with relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier and his wife Elke Buedenbender listen to the speech of Saida Hashemi, the sister of Said Nesar who died the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier and his wife Elke Buedenbender listen to the speech of Saida Hashemi, the sister of Said Nesar who died the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

German President Frank-Walter Steinmeier gives a speech after meeting relatives of the victims of the shootings in Hanau, in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

Saida Hashemi, the sister of Said Nesar who died in the shootings in Hanau, gives a speech after a meeting with German President Frank-Walter Steinmeier in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

A health worker takes a swab from a woman to test for the coronavirus disease (COVID-19), at the Fiumicino Airport in Rome, Italy, September 23, 2020. REUTERS/Remo Casilli

A health worker takes a swab from a man to test for the coronavirus disease (COVID-19), at the Fiumicino Airport in Rome, Italy, September 23, 2020. REUTERS/Remo Casilli

Saida Hashemi, the sister of Said Nesar who died in the shootings in Hanau, gives a speech after a meeting with German President Frank-Walter Steinmeier in Berlin, Germany September 22, 2020. Odd Andersen/Pool via REUTERS

Activists protest a government proposal to lift a ban on neonicotinoids, a pesticide blamed for harming bees, to protect sugar beet crops that have been ravaged by insects this year, in front the Invalides in Paris, France, September 23, 2020. Banner reads "We want poppies". REUTERS/Charles Platiau

Documents of EU chief negotiator Michel Barnier are pictured as he arrives for the EU-Brexit talks in London, Britain September 23, 2020. REUTERS/Hannah McKay

Activists protest a government proposal to lift a ban on neonicotinoids, a pesticide blamed for harming bees, to protect sugar beet crops that have been ravaged by insects this year, in front the Invalides in Paris, France, September 23, 2020. Banner reads "Insecticide, killers of bees, no is no". REUTERS/Charles Platiau

Activists protest a government proposal to lift a ban on neonicotinoids, a pesticide blamed for harming bees, to protect sugar beet crops that have been ravaged by insects this year, in front the Invalides in Paris, France, September 23, 2020. Banner reads "Insecticide, killers of bees, no is no". REUTERS/Charles Platiau

Tennis - ATP 500 - Hamburg European Open - Am Rothenbaum, Hamburg, Germany - September 23, 2020 Norway's Casper Ruud in action during his first round match against France's Benoit Paire REUTERS/Fabian Bimmer