Could you please try again?

Yes, sorry, here it is:
https://github.com/Codewars/codewars.com/issues/615

I am also experiencing this problem. Is there a link to the github issue? I would like to know when its resolved and I should come back to work on c++ problems. Thanks!

I could reproduce the problem, too.
Something on codewars has changed. I will create an issue on GutHub for this problem.

Have you solved this problem?

Sorry, I'm not very familiar with the UI yet, it's good to know 63 other people finished it.

It could be a problem with my code, however everything works fine when running the tests, it's only when submitting that it fails.
The following does not compile either when submitting, so I assume it must be a recent problem with the site.

std::string correct(std::string timeString)
{ 
  return "";
}

Thats a good idea, beyond testing algorithms or logic knowledge, more like testing basic PHP stdlib knowledge.

Maybe there is a "PHP essentials" collection list?

As you can see on the details-tab at the end of the site: 63 warriors did this kata in C++ without problems!
So there is no issue with the kata! The problem could be on the codewars-engine, then try again later.
Or the problem is in your code, and this is why the compiler crashes. Then post your code here (mark as spoiler) and we will see, whats wrong.

Welp. I can pass the tests without problem, but when I submit (even an empty function), I get a compile error from the backend:

-isystem /runner/frameworks/cpp fatal error: 'boost/algorithm/string.hpp' file not found
#include <boost/algorithm/string.hpp>

I didn't include it, so it must have been added silently.
Is this something to do with this kata in particular, or is the backend buggy? :/