Error in Outcomes report in Grade administration with ORACLE

When I try to see Outcomes report in Grade administration I get this error.
Using ORACLE DB the step are the following:
1) enable Outcomes
2) create a course
3) create an Outcome
4) create an Assignment and flag the outcome
5) click on "Grades";
6) click on "Outcomes report" in "Grade administration";

Then I get this error:
Debug info: ORA-00933: SQL command not properly ended

SELECT itemid, AVG(finalgrade) AS avg, COUNT(finalgrade) AS count
FROM d_grade_grades
WHERE itemid = :o_param1GROUP BY itemid
[array (
'o_param1' => 439,
)]

I fixed the error adding a space in line 77 (file: grade/report/outcomes/index.php) before GROUP

73 $sql = "SELECT itemid, AVG(finalgrade) AS avg, COUNT(finalgrade) AS count
74 FROM

75 WHERE itemid = ?".
76 $hidesuspendedsql.
77 "GROUP BY itemid";

modifying the line in " GROUP BY itemid";