Hello, I have a object calles Mediatek/en

I tried to build a search component to find records in the List. When I inserted it and tried it I got an error message. How can I change the code so the error will not occure. I will give you the code sample and the screenshots.


Error:



Code:

<aura:component implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId" access="global" >
 
    <!-- handlers-->
    <aura:handler name="init" value="{!this}" action="{!c.init}"/>
 
    <!-- attributes -->
    <aura:attribute name="showSearchResults" type="Boolean" default="false"/>
    <aura:attribute name="searchKey" type="String"/>
    <aura:attribute name="mediathekList" type="List" default="Mediathek[]"/>
    <aura:attribute name="mediathekColumns" type="List"/>
    
 
    <lightning:layout multipleRows="true">
        <lightning:layoutItem padding="around-small" size="9">
            <lightning:input name="searchKey" placeholder="Enter search key" value="{!v.searchKey}"/>
        </lightning:layoutItem>
        <lightning:layoutItem padding="around-small" size="3">
            <lightning:button variant="brand" label="Search" title="Search" onclick="{!c.search}" class="customButton"/>
        </lightning:layoutItem>
    </lightning:layout>
 
    <aura:if isTrue="{!v.showSearchResults}">
        <lightning:layout multipleRows="true">
            <lightning:layoutItem padding="around-small" size="12">
                Mediathek
                <lightning:datatable keyField="id"
                                     data="{!v.mediathekList}"
                                     columns="{!v.mediathekColumns}"
                                     hideCheckboxColumn="true"/>
            </lightning:layoutItem>
            
        </lightning:layout>
    </aura:if>
 
</aura:component>

Controller

({
    init: function (component, event, helper){
       component.set('v.mediathekColumns', [
            {label: 'Mediatheken Name', fieldName: 'Name', type: 'url', 
            typeAttributes: {label: { fieldName: 'Name' }, target: '_blank'}},
            
        ]);
        
    },
 
    search : function(component, event, helper) {
        helper.getSearchResultsFromApex(component, event, helper);
        component.set("v.showSearchResults",true);
    }
})

Helper

({
    getSearchResultsFromApex : function(component, event, helper){
     
        var action = component.get("c.getSearchResult");
        action.setParams({ searchKey : component.get("v.searchKey") });
     
        // Create a callback that is executed after
        // the server-side action returns
        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
 var result = response.getReturnValue();
  result.forEach(function(result){
                    result.Name = '/'+result.Id;
                      
                });
               
                // SOSL will always return the list in the order they were queried
                component.set("v.mediathekList",result[0]);
                  
                
            }
            else if (state === "INCOMPLETE") {
                // do something
            }
                else if (state === "ERROR") {
                    var errors = response.getError();
                    if (errors) {
                        if (errors[0] && errors[0].message) {
                            console.log("Error message: " +
                                        errors[0].message);
                        }
                    } else {
                        console.log("Unknown error");
                    }
                }
        });
        $A.enqueueAction(action);
    }
})

DESIGN

.THIS .customButton{
    margin-top: 19px;
}

.cSuchleiste_Media{
 height: 50px;
  background-color:#ffffff;
}