If you are currently going through a divorce or are recently divorced, then dreaming of divorce is extremely common because your dreams are trying to help you cope.
If you are not recently divorced or going through one then to dream of divorce means there has been a separation of ideas lately between you and your spouse. What sort of disagreement have you had lately? Has something like a job or a project or a person come inbetween the two of you?
Divorce, even if you aren’t the one getting divorced in the dream, can mean there is something or someone you need to separate yourself from.