Moodle 3.3 Assignment Grading by MANPREET KAUR A/P GURMIT SINGH - Saturday, 10 August 2019, 11:14 AM Number of replies: 0 When exploring the grading function, a message appeared after I provided input for the “Feedback comments”. Any advise what the issue is?Message appeared: ALERT: Cannot open the PDF. This file may be corrupt or in an unsupported format. Average of ratings: - Permalink Reply