A non-numeric value encountered

Problem/Motivation

Warning: A non-numeric value encountered in Drupal\memcache_storage\DrupalMemcachedDebug::getSummaryLogTable() (line 65 of modules/contrib/memcache_storage/src/DrupalMemcachedDebug.php).
Drupal\memcache_storage\DrupalMemcachedDebug::getSummaryLogTable() (Line: 22)
memcache_storage_page_bottom(Array) (Line: 360)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}(Object, 'memcache_storage') (Line: 405)
Drupal\Core\Extension\ModuleHandler->invokeAllWith('page_bottom', Object) (Line: 361)
Drupal\Core\Render\MainContent\HtmlRenderer->buildPageTopAndBottom(Array) (Line: 150)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 164)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 709)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Steps to reproduce

Enable debug mode in settings.

Setup

Drupal 9.4.8
PHP 8.1.8