Returned APEX object empty in LWC

Question

I've run into an issue with returning data from Apex to LWC which I'm having trouble figuring out.

I've set up an LWC which calls an apex method to make a callout an return the result of said callout after some server-side processing has been made. On server side I save the processed data in an object "CreditDecision" which also is the method return type. I then pass back to the LWC as the response.

However, In the LWC, the response from the method call is blank. When i try to just send a string as a response the result is returned just fine.

Is this due to LWC just being able to recieve sObjects, List of sObjects and primitive datatypes as returned data, or am I missing something?

Heres the code:

Returned Apex Object

   public class CreditDecision {
    Account account {get;set;}
    Opportunity opportunity {get;set;}
    
    Boolean creditAuthorized {get;set;}
    Decimal appliedCredit {get;set;}
    Decimal approvedCredit {get;set;}
    String creditRating {get;set;}
    String decisionDesc {get;set;}
    String dateOrdered {get;set;}
    String error {get;set;}
}

And the LWC code

            doCreditCheck({recordId: this.recordId,sObjectType: this.sObjectName,appliedCredit: this.appliedCredit})
        .then(result => {

            //For some reason the Result is empty {} when result isn't a primitive or sObject

            const decision = result;
            console.log('result: ' + JSON.stringify(result));
            console.log('Result data: ' + result.data);
            console.log(decision);
            this.isLoading = false;
            this.creditCheckCompleted = true;

            if(decision === 'K') {
                this.creditCheckControll = true;
            }else if (decision === 'G') { 
                this.creditCheckApproved = true;
            }else if (decision === 'A') {
                this.creditCheckDeclined = true;
            }

Answer 1

Make members public and @auraEnabled to make them available in the lightning component.

public class CreditDecision {
    @auraEnabled
    public Account account {get;set;}
    @auraEnabled
    public Opportunity opportunity {get;set;}
    @auraEnabled
    public Boolean creditAuthorized {get;set;}

    // and so on 
}

Answer 2

I'm unable to leave a comment on Rahul's response, but felt this was important to share in addition to his answer:
Even if the wrapper you are using is not being directly referenced and the wrapped data is deeply nested, the @AuraEnabled decorators still matter!!!
For instance, I have an LWC making an imperative call to an Apex controller, which passes a Map<String,Object> to an Apex helper, which retrieves data and passes it through a wrapper before passing back to the controller, passing it back to the LWC. The wrapped response is also Map<String, Object>, but the Object contains a key with a value that is a List, which in turn contains a key with a value that is a List. In this scenario, every single object class that is defined in the wrapper must be public and have each of its members @AuraEnabled. Otherwise, the call will succeed but the Objects will be empty. I hope this helps someone because it sure drove me nuts!