reports.
Gabriel had been in the UK for 13 years and had worked as a minicab driver in London since 2015.
He was planning to get married to fiancee Mara later this year, a pal said.
They added: "The wedding plans had been put on hold due to Covid but Gabriel was hopeful him and Mara could marry this year.
"It's an awful tragedy. He was the nicest, most gentle human being you could meet. He wouldn't harm a fly. We are all in shock.
"We don't know if he perhaps got into an argument with a passenger and was stabbed because of that. I can't believe why anyone would want to hurt him."
MURDER CAPITAL
Gabriel is the 12th person to be stabbed to death in London this year, the third in a week and the fifth in just 12 days.
The number of murders has been increasing year on year, with a huge spike in the amount of people that are being stabbed to death.
On the same date this time last year, there had been 15 murders in London, with seven of them being stabbed - almost doubling for this year.
It comes after 22-year-old Sven Badzak was stabbed to death in Kilburn, north west London, on February 6 and Hani Solomon, 19, was killed outside Parsons Green tube station in West London last week.
Police are appealing for information about the latest murder.
A Scotland Yard spokesman said: "Police were called to Jarrow Road, Tottenham, at 7.21pm on Wednesday after concerns were raised about an injured man who was unresponsive inside a vehicle at the location.
"Officers attended with paramedics from the London Ambulance Service and the London Air Ambulance.
"The man, believed to be in his 30s, was found with an injury consistent with having been stabbed.
"Despite the best efforts of the emergency services, he was pronounced dead at the scene at 8pm. His next of kin has been informed.
"Homicide detectives from Specialist Crime have been informed and are leading the investigation. A post mortem will be carried out in due course.”
There have been no arrests and officers are appealing for information from anyone that that might have seen anything unusual in the area last night.
Anyone with information should call 101 providing the reference CAD6202/17FEB.
Information can also be provided to Crimestoppers, anonymously, by calling 0800 555 111.