So if I walk in a car park, trip over my own feet and break my teeth, I can sue the landowner?
The op has already said no damage or obstacle, and that it was just a puddle.
Accidents happen and if the car park does not have a fault,
and the op did just trip over their own feet,
then how can they claim?
On what grounds?
Because the supermarket failed to keep the car park dry?
Because the car park was not perfectly level?