Getting error while studying this Trialhead ,https://trailhead.salesforce.com/trails/force_com_admin_beginner/modules/lex_customization/units/lex_customization_list_views

Please find the below steps to complete the challenge successfully.

• Open the Sales App
• Click on the Opportunity Sobject tab.
• Click on New from the List view controls of opportunity object as shown below
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• Give the name as High Probability Opportunities and select 
  All users can see this list view as below.
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• Now the list view is created and its time add some filters as given in the challenge.
• The first filter you need to add is list should show only opportunities whose stage is Proposal/Price Quote and Negotiation/Review.Please find the below screenshot for the reference.
• 
• Now you have to add the second filter which is whose probability is greater than or equal to 50%.Please find the below screenshot for the reference.
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• Then click on save button on the top

Now you are all set to pass the challenge.Please go ahead and click the check challenge button.