Hi everyone,

i'm getting the following error after the system checks the challenge:

"Challenge Not yet complete... here's what's wrong: 
There was an unexpected error in your org which is preventing this assessment check from completing: System.QueryException: List has no rows for assignment to SObject"

I already tested it via Apex and via REST Explorer in Workbench, the code seems fine to me:

@restResource(urlMapping='/Account/*/contacts')
global class AccountManager {
	
    @httpGet
    global static Account getAccount(){
        RestRequest request = RestContext.request;
        String accountId = request.requestURI.substringBetween('/Account/' , '/contacts');
        
        Account result = [SELECT Id, Name, (SELECT Id,Name FROM Contacts) FROM Account WHERE Id = :accountId];
  
        return result;

    }
    
}

Can somebody help me with this?

Thank you,
Fabio