Page 002108 [0] should link to the next page, which is 002235 [1]. Instead, it links to 999998 [2], which then redirects to 002235.
Similarly, 002235 links to 999999 [3], which then redirects to 002236 [4].
Since they both do redirect correctly, there's a decent chance you are aware this, and it's maybe even useful for you. But if not, and this is something leftover from development, then hopefully this report is helpful.