Hi, 
I am trying to complete the "Query GitHub Data Using Big Query" project and on the thrid step am encountering the error "Invalid Table" regarding the script that I am cutting and pasting directly from the exercies. I bolded it below. Does anyone know how old the exercise is, and if the table name has been changed? Thank you.


#standardSQL
SELECT subject, COUNT(*) AS num_duplicates
FROM `bigquery-public-data.github_repos.commits`
GROUP BY subject
ORDER BY num_duplicates
DESC LIMIT 100

The Error I get is: "Step Not yet complete... here's what's wrong: 
Please check that your report includes at least all of these columns: Supply: Supply Name, Unit Cost, Quantity and Total. 
Note: you may run into errors if you've skipped previous steps."
this is my report:

not sure where I made a mistake