Do you know how to enable or disable debugging in Moodle?

The sites can easily be enabled or disabled for debugging in a number of ways. First of all, you have to log in as an administrator and have to access the administration block site. The steps for that include:

Admin> server> debugging and set there.

From the other settings options choose 'All: show all reasonable PHP debugging messages’. To disable the debugging of sight you can set the setting to 'None: do not show any errors for warnings’.