I want to ask a question. I want to use the cut function to divide 0-100% into [0-5%), [5%-10%), [10%-15%)

Question

I want to ask a question. I want to use the cut function to divide 0-100% into [0-5%), [5%-10%), [10%-15%), [15%-20%), [ 20%-100%] What is wrong with the code in these five intervals?