Hi, I'm doing a trailhead superbadge in a newly created playground and I could successfully check the first five challenges. When trying to check the sixth one, I get this error message.

There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: QRNYONVM

Please advise on how to proceed further.

I'm trying to complete the Apex Specialist Superbadge.  I have created my WarehouseCalloutService apex class and it seems to match how others have created their class.  However when I run my code and then try and check the challenge, I'm getting the error that seems many others are getting about the Challenge Not Yet Complete.... "The runWarehouseEquipmentSync method does not appear to have run successfully. Could not find a successfully completed @future job for this method. Make sure that you run this method at least one before attempting this challenge. Since this method is annotated with the @future method, you may want to wait for a few seconds to ensure that it has processed successfully."

Here is my code:

public with sharing class WarehouseCalloutService {

    private static final String endpoint = 'https://th-superbadge-apex.herokuapp.com/equipment';

    @future(callout = true)	//need this so that it knows to call to external source
    public static void runWarehouseEquipmentSync(){
        Http http = new Http();
        HttpRequest httpRequest = new HttpRequest();
        httpRequest.setEndpoint(endpoint);
        httpRequest.setMethod('GET');
        HttpResponse httpResponse = http.send(httpRequest);
        
        //if successfully get the JSON file, need to parse out to different equipment objects
        if (httpResponse.getStatusCode() == 200){ //status = "OK" (this is for GET or HEAD requests)
            List<Object> equipmentList = (List<Object>) JSON.deserializeUntyped(httpResponse.getBody());
            List<Product2> products = new List<Product2>();
            
            for(Object item: equipmentList){
                Map<String, Object> productMap = (Map<String,Object>) item;	//map of item(s) in JSON file
                Product2 product = new Product2();	//list of products to insert/update in system
                
                product.Replacement_Part__c = (Boolean) productMap.get('replacement');
                product.Cost__c = (Integer) productMap.get('cost');                
                product.Current_Inventory__c = (Integer) productMap.get('quantity');
                product.Lifespan_Months__c = (Integer) productMap.get('lifespan');
                product.Maintenance_Cycle__c = (Integer) productMap.get('maintenanceperiod');
                product.Warehouse_SKU__c = (String) productMap.get('sku');
                product.Name = (String) productMap.get('name');
                product.ProductCode = (String) productMap.get('_id');
                products.add(product);
            }
            
            if(products.size() > 0){	//only need to upsert if items actually exist
                System.debug(products);
                upsert products;
            }
        }
    }
}

According to some other strings I have found on this error (https://developer.salesforce.com/forums/?id=906F0000000kE7DIAU), this is what I've looked at and the current status of it:

• Field Level Security for Lifespan_Months__c field on Equipment (Product2) object: Visible for All profiles
• 
• Remote Site Settings: Added this URL as a Remote Site and confirmed it is active - https://th-superbadge-apex.herokuapp.com
• 
• Apex Jobs: Confirmed it is listed in Apex Jobs log and that it's listing as a "Future" job type and a "Completed" status.
• 
• Execution Log: Confirmed that it shows that 1 of 50 Future classes were executed.
• 
• SOQL Query: Confirmed that the job was placed into the system.
• 

Any assistance as to why I am not getting a complete on this task would be much appreciated!