I have a Lightning App that contains some components.
For one component calling doInit() does not work.

I get following error message :
Action failed: c:BoatSearchResults$controller$doInit [component is undefined] Failing descriptor: {c:BoatSearchResults$controller$doInit}

This is the component and controller :

<aura:component implements="force:appHostable,flexipage:availableForAllPageTypes"  
                controller="BoatSearchResults"
 >
    
        <aura:handler name="init" value="{!this}" action="{!c.doInit}" />
    
</aura:component>

({
    doInit: function (component, event, helper) {
        helper.onSearch();
    }
})