Great video! In particular I encountered a problem, when using col- * with asynchronous data and infinitescroll as trigger the images are sorted in the following order 1 4 2 5 3 6 but the order should be 1 2 3 4 5 6 so that in the next update the user sees the last information received in the bottom. Have you had this problem?
Probably really late on this reply, but its only been a month so you could still hypothetically be dealing with this and its a shockingly hard error to find the source of. You probably did something like *ngFor="let x in y" when it should be *ngFor="let x of y". The difference is the word "of" rather than "in". Hence the "ngForIn" error.
