Learn SQL by Building a Student Database: Part 2 - Build a Student Database: Part 2

Codeally is not working
Hello,
I was doing “Building a Student Database: Part 2” and it worked fine. I didn’t complete it and when I logged in back next day the codeally doesn’t load. After I click on " Run with CodeAlly" prompt it shows loading remote environment for a second and goes back to “Run with CodeAlly” page.
Your code so far

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Challenge: Learn SQL by Building a Student Database: Part 2 - Build a Student Database: Part 2

Link to the challenge: