OU Moodle with new Quiz reports

On the Edit page alter the grade of a question.
On the Grades page select 'Dryrun a full regrade'
Now select 'Regrade attempts marked as needing regrading'
Observe the message

Success
ERROR: syntax error at or near "{" at character 80

SELECT q.*, qqi.grade AS maxgrade, qqi.id AS instance FROM dev_question q JOIN {$CFG->prefix}quiz_question_instances qqi ON qqi.quiz = 132 AND q.id =

qqi.question WHERE q.id IN (383,280,289,332,299,307,714,344)

• line 796 of lib/dmllib.php: call to debugging()
• line 1088 of lib/dmllib.php: call to get_recordset_sql()
• line 786 of lib/questionlib.php: call to get_records_sql()
• line 817 of lib/questionlib.php: call to question_preload_questions()
• line 523 of mod/quiz/report/overview/report.php: call to question_load_questions()
• line 171 of mod/quiz/report/overview/report.php: call to quiz_overview_report->regrade_all_needed()
• line 94 of mod/quiz/report.php: call to quiz_overview_report->display()

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Notice: Trying to get property of non-object in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 838

Warning: Attempt to assign property of non-object in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 838

Notice: Trying to get property of non-object in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 840

Warning: Attempt to assign property of non-object in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 840

Notice: Trying to get property of non-object in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 842

Notice: Undefined index: in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 842

Fatal error: Call to a member function get_question_options() on a non-object in /var/www/html/icmatest/ou-moodle-dev/lib/questionlib.php on line 842