Not here anymore it seems

Same issue here. Passes all tests, but the tab bars me from submitting the final solution.

Stuck with the same problem

Oh I misunderstood the question. Thx!

Maybe I don't understand your post but it is you who must write gcdi. The description says:

Write the following functions of two variables

som : (x, y) -> x + y
mini : (x, y) -> min(x, y)
maxi : (x, y) -> max(x, y)
lcmu : (x, y) -> lcm(abs(x), abs(y) (see note for lcm)
gcdi : (x, y) -> gcd(abs(x), abs(y) (see note for gcd)

The functions in F# test cases are not defined, e.g. gcdi.
Could somebody help fix it?

Same here. You can delete the tab on your test file, but internally the standard one is used.

Happening to me as well. Could somebody fix it please?

The test cases in Haskell has a tab in the end of 4th line, thus lead to an error.