Important notice: uriPattern: '{@controller}(/{@action})' exists also in Forger package, and that makes conflict. To solve it, SGalinski.TypoScriptReferenceFrontend routes should be included in main Routes.yaml file before forger routes. And it should be prefixed in main Routes.yaml file like this: uriPattern: 'ts/<SGalinski.TypoScriptReferenceFrontend>'