Modify an AppExchange dashboard
Maria Jimenez is looking for reports and dashboards on AppExchange to track her team's transition to Lightning Experience. Install the AppExchange Dashboard Pack for Sales, Marketing and Service package into your Trailhead Playground and make some modifications. 

You’ll need your hands-on org username and password to complete this challenge. If you're using a Trailhead Playground, this article shows you how to find your username and reset your password. If you have trouble installing the package, follow the steps in this article.

In your Trailhead Playground, install the AppExchange Dashboard Pack for Sales, Marketing and Service.
Clone the 1-Account, Contact & Opportunity Data Quality dashboard and name it My Account and Contact Dashboard.
Add a dashboard filter on the Billing City field so that the dashboard only shows info about Accounts in London.
Save and refresh the dashboard.

I am trying to complete this challenge from past 4 hours still am not able to do it. Please help me guys! Guide me!!!!

So I'm I'm writing a test method for some code that queries RecordType.Name on the Opportunity object. I'm able to grab the RecordType ID and assign it to the Opportunity. System.debug shows that the RecordType I query in the test method has an ID and Name as well.

 

For some reason, it's telling me that Opportunity.RecordType.Name is null, even after I've assigned a RecordType to the Opportunity. Anyone know what's going wrong here? Here's the code:

 

RecordType UpsellRT = [SELECT Id,Name FROM RecordType WHERE sObjectType = 'Opportunity' AND Name = 'UpSell' LIMIT 1];

Opportunity OPP = new Opportunity(
	Name = 'Test Opp',
	RecordTypeId = UpsellRT.Id,
	CloseDate = Date.valueOf('2013-01-01'),
	StageName = 'Closed Won');
insert OPP;