execute procedure via dbforge studio give error cursor does not exist.

execute procedure via dbforge studio give error cursor does not exist.

While executing the procedure via dbforge studio, it gives an error: Cursor <cursor_name> does not exist.
But the same code runs in pgadmin, and it's working fine.

call ea.usp_procedure_name(parm_1,parm_2,'ref_result_data1');
fetch all FROM  ref_result_data1;