This is the reason your EK4 is cancelled.
Emirates made the decision to cancel this evening’s EK4 from London to Dubai. The flight was scheduled to depart at 8:40PM, and arrive in Dubai at 9:35AM on Wednesday.
Instead the crew that was scheduled to operate EK4 will instead operate EK216, allowing for a crew change, and a seamless transition for passengers (well, as seamless as it can be while double diverting).
https://onemileatatime.com/news/emir...diverts-twice/