Testing MDL-40410 I've found a coding error when opening Quiz -> Results -> Statistics
Affects only master.
Coding error detected, it must be fixed by a programmer: start_progress() parent progress count must be at least 1
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Debug info:
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Error code: codingerror
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Stack trace:
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line 104 of /lib/classes/progress/base.php: coding_exception thrown
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line 671 of /mod/quiz/report/statistics/report.php: call to core\progress\base->start_progress()
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line 612 of /mod/quiz/report/statistics/report.php: call to quiz_statistics_report->analyse_responses_for_all_questions_and_subquestions()
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line 149 of /mod/quiz/report/statistics/report.php: call to quiz_statistics_report->get_all_stats_and_analysis()
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line 100 of /mod/quiz/report.php: call to quiz_statistics_report->display()
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