Dashboard prompt returned error (Failed to load (Odbc driver returned an error SQLExecDirectW).)

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Currently I am using SQL Results option to populate value of a dashboard prompt called "Global Job Band".I am using below SQL code for this :

Select SUBSTR ("Grade"."Grade Name", 1, INSTR ("Grade"."Grade Name", '.', 1) - 1) FROM "Workforce Management - Worker Assignment Event Real Time" WHERE "Grade"."Grade Active Status" = 'Active' FETCH FIRST 65001 ROWS ONLY

After running this code in OTBI we are getting error message as Failed to load (Odbc driver returned an error SQLExecDirectW).)

Please advice how to fix such issue in OTBI.