Admin Error Message: "Call to a member function format() on false" after update to 2.11.9.2

[mfickers]

Preconditions

Updated our shop:
PHP 8.2 -> 8.3
Magento 2.4.7-p2 -> 2.4.7-p3
ElasticSuite: 2.11.8.2 -> 2.11.9.2

Now in admin area, a persistent error message is shown where the admin notifications should be:

Call to a member function format() on false

Magento Version : 2.4.7-p3

ElasticSuite Version : 2.11.9.2

Environment : Production

Third party modules :

Steps to reproduce

1. Open admin area

Expected result

1. See admin notifications

Actual result

1. Error message shown:
   

This is the relevant entry from exception.log

==> var/log/exception.log <==
[2024-11-25T09:28:53.350800+00:00] .CRITICAL: Error: Call to a member function format() on false in /var/www/magento//vendor/smile/elasticsuite/src/module-elasticsuite-indices/Model/IndexStatusProvider.php:122
Stack trace:
#0 /var/www/magento//vendor/smile/elasticsuite/src/module-elasticsuite-indices/Model/IndexStatusProvider.php(92): Smile\ElasticsuiteIndices\Model\IndexStatusProvider->isRebuilding()
#1 /var/www/magento//vendor/smile/elasticsuite/src/module-elasticsuite-indices/Model/IndexStatsProvider.php(137): Smile\ElasticsuiteIndices\Model\IndexStatusProvider->getIndexStatus()
#2 /var/www/magento//vendor/smile/elasticsuite/src/module-elasticsuite-indices/Model/System/Message/WarningAboutClusterGhostIndices.php(122): Smile\ElasticsuiteIndices\Model\IndexStatsProvider->indexStats()
#3 /var/www/magento//vendor/smile/elasticsuite/src/module-elasticsuite-indices/Model/System/Message/WarningAboutClusterGhostIndices.php(64): Smile\ElasticsuiteIndices\Model\System\Message\WarningAboutClusterGhostIndices->getNumberOfGhostIndices()
#4 /var/www/magento//vendor/magento/module-admin-notification/Model/ResourceModel/System/Message/Collection/Synchronized.php(32): Smile\ElasticsuiteIndices\Model\System\Message\WarningAboutClusterGhostIndices->isDisplayed()
#5 /var/www/magento//vendor/magento/framework/Data/Collection/AbstractDb.php(809): Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized->_afterLoad()
#6 /var/www/magento//vendor/magento/framework/Data/Collection/AbstractDb.php(777): Magento\Framework\Data\Collection\AbstractDb->loadWithFilter()
#7 /var/www/magento//vendor/magento/framework/Data/Collection.php(847): Magento\Framework\Data\Collection\AbstractDb->load()
#8 /var/www/magento//vendor/magento/framework/Data/Collection.php(748): Magento\Framework\Data\Collection->getIterator()
#9 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\Data\Collection->toArray()
#10 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(138): Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized\Interceptor->___callParent()
#11 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(153): Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized\Interceptor->Magento\Framework\Interception\{closure}()
#12 /var/www/magento//generated/code/Magento/AdminNotification/Model/ResourceModel/System/Message/Collection/Synchronized/Interceptor.php(32): Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized\Interceptor->___callPlugins()
#13 /var/www/magento//vendor/magento/module-ui/DataProvider/AbstractDataProvider.php(263): Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized\Interceptor->toArray()
#14 /var/www/magento//vendor/magento/module-ui/Component/Listing.php(38): Magento\Ui\DataProvider\AbstractDataProvider->getData()
#15 /var/www/magento//vendor/magento/framework/View/Element/UiComponent/Context.php(250): Magento\Ui\Component\Listing->getDataSourceData()
#16 /var/www/magento//vendor/magento/framework/View/Layout/Generic.php(75): Magento\Framework\View\Element\UiComponent\Context->getDataSourceData()
#17 /var/www/magento//vendor/magento/framework/View/Layout/Generator/Structure.php(46): Magento\Framework\View\Layout\Generic->build()
#18 /var/www/magento//vendor/magento/module-ui/TemplateEngine/Xhtml/Result.php(102): Magento\Framework\View\Layout\Generator\Structure->generate()
#19 /var/www/magento//vendor/magento/module-ui/TemplateEngine/Xhtml/Result.php(124): Magento\Ui\TemplateEngine\Xhtml\Result->appendLayoutConfiguration()
#20 /var/www/magento//vendor/magento/module-ui/Component/Wrapper/UiComponent.php(73): Magento\Ui\TemplateEngine\Xhtml\Result->__toString()
#21 /var/www/magento//vendor/magento/framework/View/Element/AbstractBlock.php(1128): Magento\Ui\Component\Wrapper\UiComponent->_toHtml()
#22 /var/www/magento//vendor/magento/framework/View/Element/AbstractBlock.php(1132): Magento\Framework\View\Element\AbstractBlock->Magento\Framework\View\Element\{closure}()
#23 /var/www/magento//vendor/magento/framework/View/Element/AbstractBlock.php(676): Magento\Framework\View\Element\AbstractBlock->_loadCache()
#24 /var/www/magento//vendor/magento/framework/View/Layout.php(591): Magento\Framework\View\Element\AbstractBlock->toHtml()
#25 /var/www/magento//vendor/magento/framework/View/Layout.php(553): Magento\Framework\View\Layout->_renderUiComponent()
#26 /var/www/magento//vendor/magento/framework/View/Layout.php(510): Magento\Framework\View\Layout->renderNonCachedElement()
#27 /var/www/magento//vendor/magento/framework/View/Layout.php(606): Magento\Framework\View\Layout->renderElement()
#28 /var/www/magento//vendor/magento/framework/View/Layout.php(557): Magento\Framework\View\Layout->_renderContainer()
#29 /var/www/magento//vendor/magento/framework/View/Layout.php(510): Magento\Framework\View\Layout->renderNonCachedElement()
#30 /var/www/magento//vendor/magento/framework/View/Layout.php(606): Magento\Framework\View\Layout->renderElement()
#31 /var/www/magento//vendor/magento/framework/View/Layout.php(557): Magento\Framework\View\Layout->_renderContainer()
#32 /var/www/magento//vendor/magento/framework/View/Layout.php(510): Magento\Framework\View\Layout->renderNonCachedElement()
#33 /var/www/magento//vendor/magento/framework/View/Layout.php(606): Magento\Framework\View\Layout->renderElement()
#34 /var/www/magento//vendor/magento/framework/View/Layout.php(557): Magento\Framework\View\Layout->_renderContainer()
#35 /var/www/magento//vendor/magento/framework/View/Layout.php(510): Magento\Framework\View\Layout->renderNonCachedElement()
#36 /var/www/magento//vendor/magento/framework/View/Layout.php(606): Magento\Framework\View\Layout->renderElement()
#37 /var/www/magento//vendor/magento/framework/View/Layout.php(557): Magento\Framework\View\Layout->_renderContainer()
#38 /var/www/magento//vendor/magento/framework/View/Layout.php(510): Magento\Framework\View\Layout->renderNonCachedElement()
#39 /var/www/magento//vendor/magento/framework/View/Layout.php(606): Magento\Framework\View\Layout->renderElement()
#40 /var/www/magento//vendor/magento/framework/View/Layout.php(557): Magento\Framework\View\Layout->_renderContainer()
#41 /var/www/magento//vendor/magento/framework/View/Layout.php(510): Magento\Framework\View\Layout->renderNonCachedElement()
#42 /var/www/magento//vendor/magento/framework/View/Layout.php(975): Magento\Framework\View\Layout->renderElement()
#43 /var/www/magento//generated/code/Magento/Framework/View/Layout/Interceptor.php(41): Magento\Framework\View\Layout->getOutput()
#44 /var/www/magento//vendor/magento/framework/View/Result/Page.php(260): Magento\Framework\View\Layout\Interceptor->getOutput()
#45 /var/www/magento//vendor/magento/framework/View/Result/Layout.php(171): Magento\Framework\View\Result\Page->render()
#46 /var/www/magento//generated/code/Magento/Backend/Model/View/Result/Page/Interceptor.php(23): Magento\Framework\View\Result\Layout->renderResult()
#47 /var/www/magento//vendor/magento/framework/App/Http.php(120): Magento\Backend\Model\View\Result\Page\Interceptor->renderResult()
#48 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->launch()
#49 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent()
#50 /var/www/magento//vendor/magento/module-application-performance-monitor/Plugin/ApplicationPerformanceMonitor.php(38): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#51 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(135): Magento\ApplicationPerformanceMonitor\Plugin\ApplicationPerformanceMonitor->aroundLaunch()
#52 /var/www/magento//vendor/justbetter/magento2-sentry/Plugin/GlobalExceptionCatcher.php(78): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#53 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(135): JustBetter\Sentry\Plugin\GlobalExceptionCatcher->aroundLaunch()
#54 /var/www/magento//vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#55 /var/www/magento//generated/code/Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http\Interceptor->___callPlugins()
#56 /var/www/magento//vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http\Interceptor->launch()
#57 /var/www/magento//pub/index.php(30): Magento\Framework\App\Bootstrap->run()
#58 {main} {"exception":"[object] (Error(code: 0): Call to a member function format() on false at /var/www/magento//vendor/smile/elasticsuite/src/module-elasticsuite-indices/Model/IndexStatusProvider.php:122)"} []

For the index with the name mag2_default_catalog_product_20241125_091325 this method will return false instead of a valid DateTime: \Smile\ElasticsuiteIndices\Model\IndexStatusProvider::getIndexUpdatedDateFromIndexName

These are the values that produce this result:

Actual error is thrown here: \Smile\ElasticsuiteIndices\Model\IndexStatusProvider::isRebuilding
The method annotation even expects DateTime|false for the $indexDate parameter but does not handle a false value correctly:

    private function isRebuilding(string $indexName, $indexDate): bool
    {
        if (!empty($this->workingIndexers)) {
            foreach (array_keys($this->workingIndexers) as $indexKey) {
                if (strpos((string) $indexName, $indexKey) !== false) {
                    $today = new DateTime('now');

                    return ($today->format('Y-m-d') === $indexDate->format('Y-m-d'));
                }
            }
        }

        return false;
    }

Looks like this was introduced in this commit: e208790

[mfickers]

Error is gone now an hour later. Maybe this only happens during the first reindex process after the update.