View source for Coding error detected it must be fixed by a programmer

 Sumber : https://bobcares.com/blog/moodle-coding-error-detected/
 Our experts have put together this quick fix to help out in these situations:

 To begin with, head to the Moodle root directory
 #cd /var/www/html/moodle

 Then, run this command to clear the cache:
 #php admin/cli/purge_caches.php

 Now, it is time to head to the moodledata/cache directory:
 #cd /var/moodledata/cache

 At this point, we have to remove the cache store directory. Our experts would lo point out that we should not remove or change the core_component.php file.
 # rm -rf cachestore_file/

 Finally, reload the Moodle Page.
 If the above steps did not help, take a look at these troubleshooting tips:

 The error message will give us more details about the error. This will help us pinpoint the problem.
 If you are not running the latest version of Moodle, we have to upgrade to the latest release.
 In case we are using custom code or plugins, make sure they are compatible with your Moodle version. Else, we may have to update them.
 Next, review the server configuration to make sure it meets Moodle’s requirements. We have to check PHP settings, file permissions, etc.
 Furthermore, we can enable debugging in Moodle to for more detailed error messages. This will help us identify the root cause of the problem.