I want to make new assignments to demonstrate 2.6 assignment features.
When I try to create an assignment I get the error: Notice: Undefined property: stdClass::$completiondefault in /html/course/moodleform_mod.php on line 664

and then if I persevere and try to save the assignment I get the long error message reprinted below. This means currently nobody can try any kind of assignment on the school demo; nor can they use an assignment in Single activity course format. Nor can they edit previously made assignments because of an earlier issue linked here.

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Debug info: Column 'requireallteammemberssubmit' cannot be null
INSERT INTO mdl_assign (name,timemodified,course,intro,introformat,alwaysshowdescription,submissiondrafts,requiresubmissionstatement,sendnotifications,sendlatenotifications,duedate,cutoffdate,allowsubmissionsfromdate,grade,completionsubmit,teamsubmission,requireallteammemberssubmit,blindmarking,attemptreopenmethod,markingworkflow,markingallocation) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
0 => 'PDF Assignment: Causes of the October 1917 Revolution',
1 => 1385145783,
2 => '140',
3 => '<p>Explain the causes of the October 1917 revolution using quotes from source materials and referencing your work. Save your work as a PDF file before uploading to allow your teacher to comment on it directly.</p>',
4 => '1',
5 => 0,
6 => '0',
7 => '0',
8 => '0',
9 => '0',
10 => 0,
11 => 0,
12 => 0,
13 => '100',
14 => 0,
15 => '0',
16 => NULL,
17 => '0',
18 => 'none',
19 => '0',
20 => NULL,
)]
Error code: dmlwriteexception
Stack trace:
line 444 of /lib/dml/moodle_database.php: dml_write_exception thrown
line 1080 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
line 1122 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
line 578 of /mod/assign/locallib.php: call to mysqli_native_moodle_database->insert_record()
line 41 of /mod/assign/lib.php: call to assign->add_instance()
line 101 of /course/modlib.php: call to assign_add_instance()
line 270 of /course/modedit.php: call to add_moduleinfo()
Output buffer: <br /> <b>Notice</b>: Undefined property: stdClass::$completiondefault in <b>/html/course/moodleform_mod.php</b> on line <b>664</b><br /> <br /> <b>Notice</b>: Undefined property: stdClass::$requireallteammemberssubmit in <b>/html/mod/assign/locallib.php</b> on line <b>563</b><br /> <br /> <b>Notice</b>: Undefined property: stdClass::$markingallocation in <b>/html/mod/assign/locallib.php</b> on line <b>576</b><br />