When I add a specific filter that I need, my report errors

I have an analysis in Workforce Learning - Learning Records Real Time

Here is my SQL:

SET VARIABLE PREFERRED_CURRENCY='User Preferred Currency 1',PREFERRED_CURRENCY='User Preferred Currency 1';SELECT

0 s_0,

"Workforce Learning - Learning Records Real Time"."Assigned Learning Item Information"."Assigned Learning Item Title" s_1,

"Workforce Learning - Learning Records Real Time"."Assigned to Information"."Assignee Display Name" s_2,

"Workforce Learning - Learning Records Real Time"."Assigned to Information"."Assignee Person Number" s_3,

"Workforce Learning - Learning Records Real Time"."Learner Activity Attempt Information"."Activity Attempt Completed Date" s_4,

"Workforce Learning - Learning Records Real Time"."Learner Activity Attempt Information"."Activity Attempt Status Description" s_5,