Argument must be of type Countable|array in SolariumQuerier.php

[coret]

When searching I get the following error (may related to Daniel-KM/Omeka-S-module-AdvancedSearch#14 ?):

TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/http/goudatijdmachine.nl/omeka-s-modules/SearchSolr/src/Querier/SolariumQuerier.php:196
Stack trace:
#0 /home/http/goudatijdmachine.nl/omeka-s-modules/SearchSolr/src/Querier/SolariumQuerier.php(196): count()
#1 /home/http/goudatijdmachine.nl/omeka-s-modules/AdvancedSearch/src/Mvc/Controller/Plugin/SearchRequestToResponse.php(264): SearchSolr\Querier\SolariumQuerier->query()
#2 [internal function]: AdvancedSearch\Mvc\Controller\Plugin\SearchRequestToResponse->__invoke()
#3 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-mvc/src/Controller/AbstractController.php(275): call_user_func_array()
#4 /home/http/goudatijdmachine.nl/omeka-s-modules/AdvancedSearch/src/Controller/SearchController.php(154): Laminas\Mvc\Controller\AbstractController->__call()
#5 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-mvc/src/Controller/AbstractActionController.php(71): AdvancedSearch\Controller\SearchController->searchAction()
#6 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-eventmanager/src/EventManager.php(319): Laminas\Mvc\Controller\AbstractActionController->onDispatch()
#7 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-eventmanager/src/EventManager.php(179): Laminas\EventManager\EventManager->triggerListeners()
#8 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-mvc/src/Controller/AbstractController.php(97): Laminas\EventManager\EventManager->triggerEventUntil()
#9 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-mvc/src/DispatchListener.php(132): Laminas\Mvc\Controller\AbstractController->dispatch()
#10 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-eventmanager/src/EventManager.php(319): Laminas\Mvc\DispatchListener->onDispatch()
#11 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-eventmanager/src/EventManager.php(179): Laminas\EventManager\EventManager->triggerListeners()
#12 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/vendor/laminas/laminas-mvc/src/Application.php(325): Laminas\EventManager\EventManager->triggerEventUntil()

#13 /home/http/goudatijdmachine.nl/omeka-s-4.1.1/index.php(21): Laminas\Mvc\Application->run()
#14 {main}

Commenting out the following code gets rid of the error and I get search results again (albeit without facets):

Omeka-S-module-SearchSolr/src/Querier/SolariumQuerier.php

Lines 196 to 213 in ec9b5e4

	if (!$this->byResourceType && count($this->resourceTypes) > 1) {
	$allResourceIdsByType = $this->response->getAllResourceIds(null, true);
	if (isset($allResourceIdsByType['resources'])) {
	$this->response->setAllResourceIdsByResourceType(['resources' => $allResourceIdsByType['resources']]);
	} else {
	$this->response->setAllResourceIdsByResourceType(['resources' => array_merge(...array_values($allResourceIdsByType))]);
	}
	$resultsByType = $this->response->getResults();
	if (isset($resultsByType['resources'])) {
	$this->response->setResults(['resources' => $resultsByType['resources']]);
	} else {
	$this->response->setResults(['resources' => array_replace(...array_values($resultsByType))]);
	}
	$totalResultsByType = $this->response->getResourceTotalResults();
	$total = isset($totalResultsByType['resources']) ? $totalResultsByType['resources'] : array_sum($totalResultsByType);
	$this->response->setResourceTotalResults('resources', $total);
	$this->response->setTotalResults($total);
	}

FYI:
Omeka S - version 4.1.1
Advanced Search - version 3.4.32
Advanced Search adapter for Solr - version 3.5.48

[Daniel-KM]

Ok, thanks.