Water can travel along surfaces before becoming visible. The position of a puddle alone does not identify the source, especially near sinks, pipework or another appliance.
Understanding this situation
Observe from a safe dry position whether there is an obvious external spill or a pattern associated with normal use. Do not pull the machine out while wet, reach behind it or run another leaking cycle merely to trace the water.
A useful next step
Stop use where leakage or wet electrics are involved and isolate only if safe. Report when the water first appeared and its visible location. A clear uncertainty about the source is better than an incorrect confident diagnosis of the door seal.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.