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"

Apex class

@RestResource(urlMapping='/Accounts/*/contacts')
global with sharing class AccountManager {
    @httpGet
    global static Account getAccount(){
        RestRequest request = RestContext.request;
        String accountId = request.requestURI.substringBetween('Accounts/','/contacts');
        system.debug(accountId);
        Account objAccount=[SELECt id, name,(select id, name from Contacts) from Account
                           where id=:accountId limit 1];
        return objAccount;
    }

}

Test class

@isTest
private class AccountManagerTest {
    static testMethod void testMethod1(){
        Account objAccount = new Account(Name='Test Account');
        insert objAccount;
        
        Contact objContact = new Contact(LastName= 'test Contact',
                                        AccountId = objAccount.Id);
        insert objContact;
        
        Id recordID = objAccount.Id;
        
        RestRequest request = new RestRequest();
        request.requestURI = 'https://cunning-moose-pmifqd-dev-ed.my.salesforce.com/services/apexrest/Accounts/' +
                    recordId + 'contacts';
        request.httpMethod = 'GET';
        RestContext.request = request;
        
        Account thisAccount = AccountManager.getAccount();
        
        System.assert(thisAccount!= null);
        system.assertEquals('Test Account', thisAccount.Name);
        
    }
         

}

Can somebody help me with this?
Thank you,