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Bug
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Resolution: Fixed
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Major
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3.9.14
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MOODLE_39_STABLE
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MOODLE_405_STABLE, MOODLE_500_STABLE
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MDL-74900-405 -
MDL-74900-500 -
MDL-74900-main -
Testing instructions
Note:
Please make sure the course recycle bin is disabled, otherwise you may encounter an error related to MDL-68365.Set up:
- Create a new course, and inside the course, create an activity (e.g., a label, assignment, etc.).
Take note of the activity's course module ID (cmid) and the course id for later. - Download the file testadhoc_MDL-74900.php
 and place it inside the admin/ folder of your Moodle instance. - Edit the testadhoc_
MDL-74900.php file and update it to use the cmid of the activity you just created.
Testing:
- Run the following command from your Moodle root directory to execute adhoc tasks: Â
php admin/cli/adhoc_task.php --execute --keep-alive=500
- In your browser, access: Â <yourmoodlesite>/admin/testadhoc_
MDL-74900.php - Confirm that the following error is displayed in the console where the adhoc task was executed: Â
The course module 76 could not be deleted. error/cannotdeletemodulemissinginstance (Cannot delete course module with ID [Your cmid] because it does not have a valid activity instance.
- Access to site administration / Server / Ad hoc tasks and confirm there is one new failed task of the component "course_delete_modules" with your cmid
Testing instructions Note: Please make sure the course recycle bin is disabled , otherwise you may encounter an error related to MDL-68365 . Set up: Create a new course, and inside the course, create an activity (e.g., a label, assignment, etc.). Take note of the activity's course module ID ( cmid ) and the course id for later. Download the file testadhoc_MDL-74900.php  and place it inside the admin/ folder of your Moodle instance. Edit the testadhoc_ MDL-74900 .php file and update it to use the cmid of the activity you just created. Testing: Run the following command from your Moodle root directory to execute adhoc tasks:  php admin/cli/adhoc_task.php --execute --keep-alive= 500 In your browser, access:  <yourmoodlesite>/admin/testadhoc_ MDL-74900 .php Confirm that the following error is displayed in the console where the adhoc task was executed:  The course module 76 could not be deleted. error/cannotdeletemodulemissinginstance (Cannot delete course module with ID [Your cmid] because it does not have a valid activity instance. Access to site administration / Server / Ad hoc tasks and confirm there is one new failed task of the component "course_delete_modules" with your cmid - Create a new course, and inside the course, create an activity (e.g., a label, assignment, etc.).
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Code verified against automated checks. 
Checked
MDL-74900using repository: https://github.com/raortegar/moodle.git
MOODLE_405_STABLE (0 errors / 0 warnings) [branch: MDL-74900-405 | CI Job]- MOODLE_500_STABLE (0 errors / 0 warnings) [branch: MDL-74900-500 | CI Job]
- main (0 errors / 0 warnings) [branch: MDL-74900-main | CI Job]
More information about this report
Built on: Wed May 21 06:58:16 UTC 2025
Code verified against automated checks. Checked MDL-74900 using repository: https://github.com/raortegar/moodle.git MOODLE_405_STABLE (0 errors / 0 warnings) [branch: MDL-74900-405 | CI Job ] MOODLE_500_STABLE (0 errors / 0 warnings) [branch: MDL-74900-500 | CI Job ] main (0 errors / 0 warnings) [branch: MDL-74900-main | CI Job ] More information about this report Built on: Wed May 21 06:58:16 UTC 2025 -
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2
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Team Hedgehogs 2025 Sprint 2.0, Team Hedgehogs 2025 Sprint 2.1
I'm not sure if that's legit for course module to have zero instance, but we're facing failing course_delete_modules adhoc tasks quite often due to this issue.
Task log:
Execute adhoc task: core_course\task\course_delete_modules
|
Adhoc task id: 181318323 |
Adhoc task custom data: {"cms":{"10476298":{"id":"10476298"}},"userid":"503662","realuserid":"503662"} |
... started 09:34:33. Current memory use 127.2MB. |
Debugging increased temporarily due to faildelay of 61440 |
... used 20 dbqueries |
... used 0.07473611831665 seconds |
Adhoc task failed: core_course\task\course_delete_modules,Coding error detected, it must be fixed by a programmer: The course module 10476298 could not be deleted. error/cannotdeletemoduleinstance: /var/www/site/course/lib.php(1055) #0 /var/www/site/course/classes/task/course_delete_modules.php(66): course_delete_module('10476298') |
#1 /var/www/site/lib/cronlib.php(359): core_course\task\course_delete_modules->execute() |
#2 /var/www/site/lib/cronlib.php(198): cron_run_inner_adhoc_task(Object(core_course\task\course_delete_modules)) |
#3 /var/www/site/admin/cli/adhoc_task.php(131): cron_run_adhoc_tasks(1654126431, 60, true) |
#4 {main} |
Backtrace:
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* line 359 of /lib/cronlib.php: call to core_course\task\course_delete_modules->execute() |
* line 198 of /lib/cronlib.php: call to cron_run_inner_adhoc_task() |
* line 131 of /admin/cli/adhoc_task.php: call to cron_run_adhoc_tasks() |
/var/www/site/course/lib.php(1055) is this line: https://github.com/moodle/moodle/blob/05087afd40ea642f339792a2d5335086a1d1d4f7/course/lib.php#L1055
Course module record:
moodle=# SELECT m.name, cm.instance, cm.added FROM mdl_course_modules cm, mdl_modules m WHERE cm.module = m.id AND cm.id = 10476298; |
name | instance | added
|
-------+----------+------------
|
label | 0 | 1436938217 |
(1 row) |
Despite old timestamp this seems to be a recently created/restored from a backup course.
