[TYPO3-english] migration from PHP_SCRIPT_INT to an extbase extension

[TSniper]

Hello,

i'm migrating an old website that uses markups and subparts and a typoscript to excute php script : temp.search = PHP_SCRIPT_INT ...
i created my first extension to run those scripts, no it shows the error : Erreur : 
The technical reason is: No template was found. View could not be resolved for action "Search" in class "company\searching\Controller\SearchingsController".

but i wasn't using any template file for this scripts, how can i resolve this error ?

thank you in advance for any help!