There is a delay in Cargo due to cargo shipments before Chinese New Year, a decreased volume of cargo picked up by carriers due to the Chinese New Year break, and interruption to normal personnel levels caused by Covid-19 infection.
More information is available at:

https://www.straitstimes.com/singapore/cargo-stuck-at-changi-airport-as-covid-19-causes-shortage-of-manpower

Let us remind you that this is only a few days' delay.