The cache is not at the published coordinates. You will need to complete the Adventure Lab cache titled A Track Through the City to get the final coordinates for this physical cache.
This Adventure Lab will bring you down a section of the old Singapore - Kranji Railway line, which was Singapore's first railway line. The journey begins at Tank Road and makes its way through Chinatown to Tanjong Pagar on a 2.5km walk through the city.
To play the Adventure Lab cache, download the Official Adventure Lab app from the App store. When all five virtual locations are found, you will have the coordinates for this cache.
Final coordinates: N 1° 16.DAB E 103° 50.EAC