There shouldn't be a chapter this week, however, the chapter that's set for official release on the 19th might come earlier than the usual 4 days before for the online scan, so we might get it earlier than the 15th, which is when people expect the next chapter to be released, but that's because the magazine is coming off a break.
For those who don't know, the magazine has 4 breaks per year, one for Golden Week in late April, early May, one in I believe the first week in August for a festival holiday, and two in December, the 2nd and 4th weeks of December iirc. So what should've happened if we went strictly by release is we would've had a chapter, then a break, then a chapter, then a break, then normal schedule, however the scanlators somehow got the chapters early, so it ended up being chapter, chapter, break, break, normal schedule. So the chapters got bunched up together, as did the breaks. We shouldn't have gotten a chapter around Christmas, but we did, so in exchange the following week was a break, rather than getting a chapter. This week is the second of two breaks, and next week will start the normal schedule, and by normal schedule I'm referring to the magazine's schedule, how Oda handles his breaks is his own situation and doesn't affect the other WSJ series.
tl;dr no chapter this week, this is the final week of the WSJ breaks, and we'll be back to normal schedule with regards to online releases starting next week.