The command fails because it creates a distributed array with a goal of more rebuild areas than are available in this array.
If you use the rebuildareas parameter of the mkdistributedarray command, ensure that its value is greater than or equal to the rebuildareasgoal parameter value.
If you do not use the rebuildareas parameter, but do use the rebuildareasgoal parameter, the goal value is greater than the default areas value of 1 for RAID5 or 2 for RAID6. Either reduce the goal or specify a greater areas value than the default.