Setting Draft to Submit for Grading: You have an error in your SQL syntax

[Richardvi]

Posted it at https://tracker.moodle.org/browse/MDL-80316 because I thought it was a Moodle bug. Turns out to be a MaharaWS bug.

Moodle 4.2, assignment set up as MaharaWS assignment as well as an upload file assignment. No Mahara portfolio is being turned in though. Following happens:

1. Students have submitted an assignment as draft.
2. In 'view all submissions'-screen, choose for 'edit -> submit for grading' behind a student's name.
3. Following error occurs:

Error reading from database

More information about this error
Debug info: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM mdl_user WHERE id = '22671'' at line 1
SELECT FROM mdl_user WHERE id = ?
[array (
0 => '22671',
)]
Error code: dmlreadexception×Dismiss this notification
Stack trace: * line 494 of /lib/dml/moodle_database.php: dml_read_exception thrown

line 293 of /lib/dml/moodle_read_slave_trait.php: call to moodle_database->query_end()
line 1375 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->query_end()
line 1679 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->get_records_sql()
line 1752 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql()
line 1733 of /lib/dml/moodle_database.php: call to moodle_database->get_field_sql()
line 1712 of /lib/dml/moodle_database.php: call to moodle_database->get_field_select()
line 595 of /mod/assign/submission/maharaws/locallib.php: call to moodle_database->get_field()
line 911 of /mod/assign/submission/maharaws/locallib.php: call to assign_submission_maharaws->submit_view()
line 6802 of /mod/assign/locallib.php: call to assign_submission_maharaws->submit_for_grading()
line 6850 of /mod/assign/locallib.php: call to assign->submit_for_grading()
line 561 of /mod/assign/locallib.php: call to assign->process_submit_other_for_grading()
line 55 of /mod/assign/view.php: call to assign->view()

[Richardvi]