What is the weight of the web spell when cast at 2nd level D&D 5e

So me and my friends were playing a campaign, we were at 3rd level and i was playing a sorcerer, there was a flying creature that we wanted to get down so i tried to catch it with the spell web, after they succeeded the save it fell to the ground, on my next turn i didn’t want to waist my last 2nd level spell slot so i tried using the spell catapult, we eventually ruled that the web wouldn’t weigh 5 pounds, but they said we could try it again if we can find an accurate weight for it, does anyone know what the weight of the spell web would be if cast at 2nd level?