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[Ghada El-Zoghbi <ghada@xxxxxxxxxxxxxxx>]

To replicate:

1. In a previous version of Mahara (18.10), create an institution named Inst1
2. Create an institution page to be copied for a user in Inst1.
3. Create the page with 3 rows and 3 columns.
4. Populate the page with artifacts in all rows and columns except for 1 column (i.e. the row 2 column 2 for example leave empty).
5. Upgrade Mahara to 19.10
6. Create a new user in the institution Inst1.

What happens:
- The above error will be generated

What should happen:
- The new user is created with the relevant Inst1 pages copied to their portfolio.

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https://bugs.launchpad.net/bugs/1859118

Title:
  Gridstack Layout Converstion Error During New User Creation

Status in Mahara:
  New

Bug description:
  Mahara: 19.10.1 (2019093009)
  OS: Linux 18.04
  DB: Postgres
  Browser: FF

  If an institution has pages to be copied to users upon creation and
  those pages are of the old format, an error is generated when trying
  to copy the page to the new user:

  Jan 10 14:12:34 prod: 2020/01/10 14:12:34 [error] 227
  #227: *389810 FastCGI sent in stderr: "PHP message: [WAR] 3e (lib/gridstacklayout.php:60) Undefined index: width
  #012PHP message: Call stack (most recent first):
  #012PHP message: * log_message(string(size 22), integer, true, true, string(size 37), integer) at /var/www/site/lib/errors.php:521
  #012PHP message: * error(integer, string(size 22), string(size 37), integer, array(size 9)) at /var/www/site/lib/gridstacklayout.php:60
  #012PHP message: * translate_to_new_layout(array(size 4)) at /var/www/site/lib/view.php:5929
  #012PHP message: * View->copy_contents(object(View), array(size 0)) at /var/www/site/lib/view.php:458
  #012PHP message: * View::create_from_template(array(size 5), string(size 5), string(size 5), false, false, array(size 0)) at /var/www/site/lib/collection.php:349
  #012PHP message: * Collection::create_from_template(array(size 2), string(size 5), string(size 5), false) at /var/www/site/auth/user.php:1540
  #012PHP message: * User->copy_collections(array(size 8), false) at /var/www/site/auth/user.php:1602
  #012PHP message: * User->copy_institution_views_collections_to_new_member(string(size 16)) at /var/www/site/lib/institution.php:360
  #012PHP message: * Institution->addUserAsMember(object(stdClass), null, null) at /var/www/site/lib/user.php:2622
  #012PHP message: * create_user(object(stdClass), array(size 0), object(Institution), false, null, array(size 27)) at /var/www/site/admin/users/add.php:320
  #012PHP message: * adduser_submit(object(Pieform), array(size 27)) at /var/www/site/lib/pieforms/pieform.php:546
  #012PHP message: * Pieform->__construct(array(size 8)) at /var/www/site/lib/pieforms/pieform.php:168
  #012PHP message: * Pieform::process(array(size 8)) at /var/www/site/lib/mahara.php:5432
  #012PHP message: * pieform(array(size 8)) at /var/www/site/admin/users/add.php:156
  #012PHP message:
  #012PHP message: [WAR] 3e (lib/gridstacklayout.php:73) Undefined index: width
  #012PHP message: Call stack (most recent first):
  #012PHP message: * log_message(string(size 22), integer, true, true, string(size 37), integer) at /var/w


  The issue is:

  (lib/gridstacklayout.php:60) Undefined index: width  <-
  translate_to_new_layout() doesn't find a relevant column in the row
  (i.e. that column is empty) and is trying to add the width of that
  column.

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