Problem on https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us//ExtensionArchitecture/HowTo/BackendModule/CreateModuleWithExtbase.html

[georgringer]

It seems the content about new backend modules with extbase is outdated.

a working example would be

    public function indexAction(): ResponseInterface
    {
        $viewVariables = [
            'fo' => [],
        ];
        return $this->moduleTemplateFactory
            ->create($this->request)
            ->setFlashMessageQueue($this->getFlashMessageQueue())
            ->setTitle('A title')
            ->assignMultiple($viewVariables)
            ->renderResponse('AdminModule/Index');
    }

[linawolf]

@georgringer can you hint me at what Core change caused this to change?

[georgringer]

IMO there is not a single commit but this is how it is currently now done in core

[linawolf]

@georgringer Since when does it work this way? Is a backport to 13.4 needed? also to 12.4?

[georgringer]

i just used the example in 13.4 and didn't work, therefore I guess at least 13.4

[linawolf]

I think this is the same issue: #4962