Whew! I am glad you were able to fix the problem.
As to why it broke, you would probably need to look at lower-level system or database logs to find out. I would not expect to see anything in the Moodle logs.
Quiz
Quiz Has Stopped Working
ການສົນທະນາຖືກລັອກ ດັ່ງນັ້ນ ທ່ານບໍ່ມາສາດຕອບກັບມັນ.