Paper accepted by a journal without comments
This has happened to me twice. The first occurrence was for a paper that was accepted in a decent computational fluid mechanics journal with a single reviewer. The comments were purely aesthetics ( Color change to some figures, etc.). The second time was in a chemical engineering journal (also a pretty good one), and there were absolutely zero comments from the single reviewer that reviewed the paper.

Initially, I found these occurrence quite alarming because the papers had been accepted after significant delay (2-3 months at least), but had been reviewed by a single reviewer. With time, I think this is just a proof that the review process is by itself flawed, but there is little we can do as researcher except carry our own reviews with as much care as possible.

However, from a career point of view, no one knows how many reviewers actually reviewed your paper once it is published (except for some very specific journals). What I did, and maybe I can suggest you do the same, is to take extra care when you do the proof reading of the paper and the corrections. I would even ask some colleagues or at least your co-authors to help you as much during the proof reading.