TYPO3 Core

Hello,
I have 2 different machines with OpenSuSE leap 15.6 and typo3 13.4.0
one is my working intranet; the other is new empty "introduction package"
on both machines the indexing is working correctly but I get "Oops, an error occurred!" as search result

1) on "introduction package" error 503

Fluid parse error in template
Search_action_search_35a2670ed8c57b6e, line 30 at character 22.
Error: The ViewHelper "<is:pageBrowsingResults>" could not be resolved.
Based on your spelling, the system would load the class "TYPO3\CMS\IndexedSearch\ViewHelpers\PageBrowsingResultsViewHelper", however this class does not exist. (error code 1407060572).
Template source chunk: <is:pageBrowsingResults numberOfResults="{result.count}" currentPage="{searchParams.pointer}" resultsPerPage="{searchParams.numberOfResults}" />

2) on my production Intranet

(1/2) #1407060572 TYPO3Fluid\Fluid\Core\Parser\Exception

Fluid parse error in template Search_action_search_7a78f47a21851a08, line 30 at character 22. Error: The ViewHelper "<is:pageBrowsingResults>" could not be resolved. Based on your spelling, the system would load the class "TYPO3\CMS\IndexedSearch\ViewHelpers\PageBrowsingResultsViewHelper", however this class does not exist. (error code 1407060572). Template source chunk: <is:pageBrowsingResults numberOfResults="{result.count}" currentPage="{searchParams.pointer}" resultsPerPage="{searchParams.numberOfResults}" />
in /srv/www/htdocs/sgc/vendor/typo3fluid/fluid/src/Core/Parser/TemplateParser.php line 124

public function createParsingRelatedExceptionWithContext(\Exception $error, ?string $templateIdentifier): \Exception
{
        list($line, $character, $templateCode) = $this->getCurrentParsingPointers();
        $exceptionClass = get_class($error);
        return new $exceptionClass(
            sprintf(
                'Fluid parse error in template %s, line %d at character %d. Error: %s (error code %d). Template source chunk: %s',
                (string)$templateIdentifier,
                $line,

at TYPO3Fluid\Fluid\Core\Parser\TemplateParser->createParsingRelatedExceptionWithContext()
in /srv/www/htdocs/sgc/vendor/typo3fluid/fluid/src/Core/Parser/TemplateParser.php line 114

$splitTemplate = $this->splitTemplateAtDynamicTags($templateString);
            $parsingState = $this->buildObjectTree($splitTemplate, self::CONTEXT_OUTSIDE_VIEWHELPER_ARGUMENTS);
        } catch (Exception $error) {
            throw $this->createParsingRelatedExceptionWithContext($error, $templateIdentifier);
        }
        $this->parsedTemplates[$templateIdentifier] = $parsingState;
        return $parsingState;
    }

at TYPO3Fluid\Fluid\Core\Parser\TemplateParser->parse()
in /srv/www/htdocs/sgc/vendor/typo3fluid/fluid/src/Core/Parser/TemplateParser.php line 167

}

protected function parseTemplateSource(string $templateIdentifier, \Closure $templateSourceClosure): ParsingState
{
        $parsedTemplate = $this->parse(
            $templateSourceClosure($this, $this->renderingContext->getTemplatePaths()),
            $templateIdentifier,
        );
        $parsedTemplate->setIdentifier($templateIdentifier);

+++ very long !