$conf as nullable is deprecated

Problem/Motivation

Getting protocol items:
Deprecated function: Drupal\imce\ImceFolder::setConf(): Implicitly marking parameter $conf as nullable is deprecated, the explicit nullable type must be used instead in include() (Zeile 576 in /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/vendor/composer/ClassLoader.php)
#0 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/includes/bootstrap.inc(104): _drupal_error_handler_real()
#1 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/vendor/composer/ClassLoader.php(576): _drupal_error_handler()
#2 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/vendor/composer/ClassLoader.php(576): include('...')
#3 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/vendor/composer/ClassLoader.php(427): {closure:Composer\Autoload\ClassLoader::initializeIncludeClosure():575}()
#4 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/imce/src/ImceFM.php(317): Composer\Autoload\ClassLoader->loadClass()
#5 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/imce/src/ImceFM.php(117): Drupal\imce\ImceFM->createItem()
#6 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/imce/src/ImceFM.php(105): Drupal\imce\ImceFM->init()
#7 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/imce/src/Imce.php(39): Drupal\imce\ImceFM->__construct()
#8 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/imce/src/Imce.php(29): Drupal\imce\Imce::userFM()
#9 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/imce/src/Controller/ImceController.php(36): Drupal\imce\Imce::response()
#10 [internal function]: Drupal\imce\Controller\ImceController->page()
#11 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array()
#12 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/Render/Renderer.php(634): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::wrapControllerExecutionInRenderContext():121}()
#13 [internal function]: Drupal\Core\Render\Renderer::{closure:Drupal\Core\Render\Renderer::executeInRenderContext():634}()
#14 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/Render/Renderer.php(649): Fiber->resume()
#15 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(121): Drupal\Core\Render\Renderer->executeInRenderContext()
#16 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext()
#17 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/vendor/symfony/http-kernel/HttpKernel.php(183): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::onController():96}()
#18 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#19 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/Session.php(53): Symfony\Component\HttpKernel\HttpKernel->handle()
#20 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle()
#21 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#22 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/modules/big_pipe/src/StackMiddleware/ContentLength.php(32): Drupal\Core\StackMiddleware\ContentLength->handle()
#23 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(118): Drupal\big_pipe\StackMiddleware\ContentLength->handle()
#24 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(92): Drupal\page_cache\StackMiddleware\PageCache->pass()
#25 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle()
#26 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#27 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(53): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#28 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/modules/contrib/remove_http_headers/src/StackMiddleware/RemoveHttpHeadersMiddleware.php(49): Drupal\Core\StackMiddleware\AjaxPageState->handle()
#29 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(54): Drupal\remove_http_headers\StackMiddleware\RemoveHttpHeadersMiddleware->handle()
#30 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/core/lib/Drupal/Core/DrupalKernel.php(745): Drupal\Core\StackMiddleware\StackedHttpKernel->handle()
#31 /var/www/vhosts/zentrum-gesundes-wohnen.de/httpdocs/www26/drupal/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#32 {main}

Steps to reproduce

Drupal 11.3.8
Imce 3.1.4
php 8.4.2