We use Moodle 2.7.4. We have an issue where a single instructor is having an issue with a single course with 49 students. Suddenly, when he goes to the "View/grade all submissions" page for any of the assignments in that course, the page does not load completely (it looks as if the content has loaded, but the CSS has not) and a "Maximum execution time error" occurs. He's graded several assignments before this without any difficulty.
When another person is enrolled as instructor and attempts to load the same page, the attempt succeeds. When an admin attempts to load the page, the attempt succeeds. When an admin logs in as him, and attempts to load the page, the attempt fails.
Does anyone have any ideas about what might be happening here?
Thank you,
Rebecca