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You applied too much force and the plastic compressed and cracked, and pressed this nut out. Doesn't look like ABS, but some reinforced polyamide (like PA6+GF) would crack like this. So you'd need some epoxy for nylons, which are inert to most chemicals. Make a bigger crack, shove the adhesive inside with toothpicks, compress (follow the instructions). After this, I would also use soldering iron and put 3-4 office staples perpendicular to the crack (or get something like this plastic welder with wavy staples https://www.amazon.com/dp/B091T368MK/ ).