Error in OTBI report

Summary:

Content (required):

Workforce Management- Worker Assignment Real Time

Workforce Goals - Goal Plan Assignments Real Time

Workforce Goals - Goal Status Overview Real Time

Workforce Goals - Goal Tasks Real Time

Workforce Goals - Target Outcomes Real Time

I use above subject areas and when I added the columns Task Name. Name, Task Name. Status, Task Name. Priority,

Task Name. Target Completion Date and Task Type. Type in this Subject area Workforce Goals -Target Outcomes Real Time then I am facing this error. Can you help me to resolve this error

Version (include the version you are using, if applicable):