Issue #2203271 by Xano: Undefined index "rows_order" in theme_field_ui_table().

core/includes/bootstrap.inc

core/includes/install.core.inc

core/lib/Drupal/Core/Database/Database.php

core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php

...ules/migrate/lib/Drupal/migrate/Tests/MigrateTestBase.php

core/modules/simpletest/lib/Drupal/simpletest/TestBase.php

.../modules/simpletest/lib/Drupal/simpletest/WebTestBase.php

...m/lib/Drupal/system/Tests/Database/ConnectionUnitTest.php