Can anyone explain the error in this submission?

Правка en2, от skate1512, 2020-08-16 13:39:44

I tried writing a generator script but that didn't help.
Submission Link.

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  Rev. Язык Кто Когда Δ Комментарий
en7 Английский skate1512 2020-08-16 14:35:05 140 Tiny change: 'd Solution](https://' -> 'd Solution.](https://'
en6 Английский skate1512 2020-08-16 14:21:46 473 Added explanations to the post.
en5 Английский skate1512 2020-08-16 13:46:46 3 Tiny change: 'problem/B)\nI tried ' -> 'problem/B) \nI tried '
en4 Английский skate1512 2020-08-16 13:46:26 62
en3 Английский skate1512 2020-08-16 13:45:10 5 Tiny change: '074415).\n[cut]' -> '074415).\n'
en2 Английский skate1512 2020-08-16 13:39:44 14 Tiny change: 'egdb.com/Sk7LqYLGv) but that' -> 'egdb.com/SJI1pYIfP) but that'
en1 Английский skate1512 2020-08-16 13:32:43 226 Initial revision (published)