Either not enough lye was used or you shook it too hard.
Gently agitate the misture, don't shake it vigorously.
1.) Put the vessel in a warm water bath.
2.) If that doesn't work, add a few tablespoons of salt.
3.) If that doesn't work, add more lye.
4.) If that doesn't work, give it time.
5.) If that doesn't work, repeat these steps until it does.
The Nexus really discourages spoon-feeding people answers to basic questions. Dealing with emulsions is a question that has been asked and answered time and time again on the forum. Please use the search function, and read through the other threads on the subject before posting a new thread.