I Had the “andıran quit unexpectedly” mesele for ages on a late 2011 MacBook pro. Apple expressed no interest in helping . I tried all of the above fixes and more on other websites. I even did a complete re-install of High Sierra, but the sıkıntı persisted. 1 and later. https://escatter11.fullerton.edu/nfs/show_user.php?userid=8819136