I have set up a made a brand new EE6.0.3 site and added structure but when I try and add the page I get these errors.

Warning

Creating default object from empty value

user/addons/structure/ext.structure.php, line 188

Severity: E_WARNING

Exception Caught

SQLSTATE[42000]: Syntax error or access violation: 1064 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 ‘)’ at line 3: SELECT entry_id, structure_url_title FROM (exp_structure) WHERE entry_id IN ()

ee/legacy/database/drivers/mysqli/mysqli_connection.php:114

Stack Trace: Please include when reporting this error

0 ee/legacy/database/drivers/mysqli/mysqli_driver.php(112): CI_DB_mysqli_connection->query(‘SELECT `entry_i…’)

1 ee/legacy/database/DB_driver.php(260): CI_DB_mysqli_driver->_execute(‘SELECT `entry_i…’)

2 ee/legacy/database/DB_driver.php(175): CI_DB_driver->simple_query(‘SELECT `entry_i…’)

3 ee/legacy/database/DB_active_rec.php(1070): CI_DB_driver->query(‘SELECT `entry_i…’)

4 user/addons/structure/ext.structure.php(209): CI_DB_active_record->get()

5 ee/legacy/libraries/Extensions.php(203): Structure_ext->rte_autocomplete_pages(Array, ”, ‘1’)

6 ee/legacy/libraries/Extensions.php(108): EE_Extensions->call_class(‘Structure_ext’, ‘rte_autocomplet…’, Array, Array)

7 ee/ExpressionEngine/Addons/rte/RteHelper.php(531): EE_Extensions->call(‘rte_autocomplet…’, Array, ”, ‘1’)

8 ee/ExpressionEngine/Addons/rte/RteHelper.php(430): ExpressionEngine\Addons\Rte\RteHelper::getSitePages(”, ‘1’)

9 ee/ExpressionEngine/Addons/rte/RteHelper.php(484): ExpressionEngine\Addons\Rte\RteHelper::_getPageTags()

10 ee/ExpressionEngine/Addons/rte/ft.rte.php(334): ExpressionEngine\Addons\Rte\RteHelper::replacePageUrls(‘cdsdacdas</p…’)

11 ee/legacy/libraries/api/Api_channel_fields.php(377): Rte_ft->save(‘cdsdacdas</p…’, Object(ExpressionEngine\Model\Channel\ChannelEntry))

12 ee/ExpressionEngine/Model/Content/FieldFacade.php(212): Api_channel_fields->apply(‘save’, Array)

13 ee/ExpressionEngine/Model/Content/ContentModel.php(214): ExpressionEngine\Model\Content\FieldFacade->save(Object(ExpressionEngine\Model\Channel\ChannelEntry))

14 ee/ExpressionEngine/Controller/Publish/AbstractPublish.php(377): ExpressionEngine\Model\Content\ContentModel->save()

15 ee/ExpressionEngine/Controller/Publish/Publish.php(300): ExpressionEngine\Controller\Publish\AbstractPublish->saveEntryAndRedirect(Object(ExpressionEngine\Model\Channel\ChannelEntry))

16 [internal function]: ExpressionEngine\Controller\Publish\Publish->create(‘6’)

17 ee/ExpressionEngine/Core/Core.php(251): call_user_func_array(Array, Array)

18 ee/ExpressionEngine/Core/Core.php(111): ExpressionEngine\Core\Core->runController(Array)

19 ee/ExpressionEngine/Boot/boot.php(161): ExpressionEngine\Core\Core->run(Object(ExpressionEngine\Core\Request))

20 admin.php(144): require_once(‘…’)

20 admin.php(144): require_once(‘…’)