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[Ghada El-Zoghbi <1890258@xxxxxxxxxxxxxxxxxx>]

More on this. It turns out the skin is owned by user that was deleted.

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https://bugs.launchpad.net/bugs/1890258

Title:
  Missing files crashing 19.10.4 upgrade when updating skins

Status in Mahara:
  New

Bug description:
  Mahara: 19.10.4
  OS: Linux 18.04
  DB: Postgres
  Browser: N/A (this is CLI)

  This is a follow-on to Bug #1877001

  When upgrading a Mahara (from 19.10.3 to 19.10.4), if artefact files
  are missing for some reason, the upgrade crashes.

  Also, there was a missing artefact in the DB which also crashed the
  upgrade when calling:

  $fileobj = artefact_instance_from_id($fileid);

  In Dev and Staging, we work with the DB sometimes restored from Prod.
  But, we don't always copy the site data as it can be quite large.
  Mahara has generally gracefully handled missing files.

  As for the missing artefact, I have not dug into why it is missing.

  Unfortunately, this time, the upgrade seems to not handle missing
  files for skins.

  Here is a small subset of the errors that are thrown (there were
  thousands and eventually ran out of memory).

  [WAR] b4 (lib/skin.php:915) imagesx() expects parameter 1 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagesx() expects parameter 1 to be resource, bool...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagesx() expects parameter 1 to be resource, bool...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagesx(false) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

  [WAR] b4 (lib/skin.php:915) imagesy() expects parameter 1 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagesy() expects parameter 1 to be resource, bool...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagesy() expects parameter 1 to be resource, bool...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagesy(false) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

  [WAR] b4 (lib/skin.php:915) imagesx() expects parameter 1 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagesx() expects parameter 1 to be resource, bool...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagesx() expects parameter 1 to be resource, bool...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagesx(false) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

  [WAR] b4 (lib/skin.php:915) imagesy() expects parameter 1 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagesy() expects parameter 1 to be resource, bool...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagesy() expects parameter 1 to be resource, bool...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagesy(false) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

  [WAR] b4 (lib/skin.php:915) imagesx() expects parameter 1 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagesx() expects parameter 1 to be resource, bool...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagesx() expects parameter 1 to be resource, bool...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagesx(false) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

  [WAR] b4 (lib/skin.php:915) imagesy() expects parameter 1 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagesy() expects parameter 1 to be resource, bool...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagesy() expects parameter 1 to be resource, bool...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagesy(false) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

  [WAR] b4 (lib/skin.php:915) imagecopyresampled() expects parameter 2 to be resource, boolean given
  Call stack (most recent first):
  • log_message("imagecopyresampled() expects parameter 2 to be res...", 8, true, true, "/var/www/site/lib/skin.php", 915) at /var/www/site/lib/errors.php:521
  • error(2, "imagecopyresampled() expects parameter 2 to be res...", "/var/www/site/lib/skin.php", 915, array(size 11)) at Unknown:0
  • imagecopyresampled(resource(#3027), false, 120, 67.5, 0, 0, null, null, null, null) at /var/www/site/lib/skin.php:915
  • Skin::imagebackgroundfill(resource(#3027), false, 0.125, 4, 5) at /var/www/site/lib/skin.php:975
  • Skin::generate_thumbnail("1698") at /var/www/site/lib/skin.php:261
  • Skin->commit() at /var/www/site/lib/db/upgrade.php:1579
  • xmldb_core_upgrade("2019093015") at /var/www/site/lib/upgrade.php:376
  • upgrade_core(object(stdClass)) at /var/www/site/lib/mahara.php:274
  • upgrade_mahara(array(size 1)) at /var/www/site/admin/cli/upgrade.php:74

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