How to set runny paté?
Assuming it’s chicken liver pate, have you tried adding butter, cream or other saturated fat? This can thicken and so firm pate quite well. Or you could use some kind of meal - oat flour or matzo meal, breadcrumbs etc  that would absorb the liquid. Difficult to know without the recipe - many use mushrooms but I find livers, leeks and herbs and spice plus some good sherry or port and a tablespoon or so of melted butter /and / or thick cream makes lovely pate which spread very easily and thickens nicely in the fridge. It freezes well too.