This person is talking about what caused the problem.
Completely different things.
Bad thing happened, how do we fix bad thing and its effects.
Analogous to: A house is on fire; call the ambulances to treat any wounded call the fire department, call insurance, figure out temporary housing.
This is basically immediate remedy or mitigation.
Bad thing happened, but why did the bad thing happen and how to we prevent future occurrences of this?
Analogous to: Investigate the causes of the fire, suggest various safety regulations on natural gas infrastructure, home appliances, electrical wiring, building material and methods, etc.
This is much more complex and involves systemic change.