How is “these things happen” used?

In Trainspotting (1996), one line is: “Don't worry, son. These things happen.”

Which movie is “these things happen” from?

The clip at the top of this page is from Trainspotting (1996).

Don't worry, son. These things happen.

8 作品で登場 · 1 本目

used to tell sb not to worry about sth they have done

15 本の映画に登場

オックスフォード映画の 67%
used to tell sb not to worry about sth they have done
Don't worry, son. These things happen.

定義：Oxford Advanced Learner's Dictionary 第 9 版