1) Add these buttons on student detail page

      a. When click on it Show hello world as alert

      b.Open a new popup window and show his name and Class in a table

2) Add a button on Class detail page when click on it open a popup window.. with one text box and
one button when click on that button add a new student in this class with name as in textbox.

1) Add these buttons on student detail page

      a. When click on it Show hello world as alert

      b.Open a new popup window and show his name and Class in a table

2) Add a button on Class detail page when click on it open a popup window.. with one text box and
one button when click on that button add a new student in this class with name as in textbox.

https://trailhead.salesforce.com/content/learn/modules/lex_dev_lc_basics/lex_dev_lc_basics_forms

The message is "Challenge not yet complete in My Trailhead Playground 1. The campingList component isn't iterating the array of 'items' and creating 'campingListItem' components.".

I have reviewed all the answers related to this issue but still can't figure it out.

 

Hello Communty

I am trying to complete this challenge:

To pass this challenge, create a custom button which opens a link to 'http://google.com?q=<CONTACT NAME>' - where <CONTACT NAME> is the current contact's name. Then add this button to the default 'Contact Layout'.
The custom button must be labeled 'Google Info' with the name 'Google_Info'.
The custom button must dynamically insert the contact's name using the appropriate merge field.
The custom button must be added to the 'Contact Layout' page layout.


But keep getting this error: 

Challenge Not yet complete... here's what's wrong: 
The 'Google Info' custom button was not found. Hint: Make sure that it is a Detail Page Button (not link) and that its added to the page layout.

Please view the seenshot.

What am i doing wrong? Thanks for your help!