Why I cannot generate model using attribute enum with defaultValue?

I was trying to generate model using below command but didn't work: npx sequelize-cli model:generate --name Profile --attributes username:string,imageUrl:string,fullname:string,dateOfBirth:date,UserId:UUID,role:enum:'{staff,admin}':defaultValue:staff

Why I cannot generate model using attribute enum with defaultValue? If I delete defaultValue part its working

npx sequelize-cli model:generate --name Profile --attributes username:string,imageUrl:string,fullname:string,dateOfBirth:date,UserId:UUID,role:enum:'{staff,admin}'