To go astray is to become lost, or to wander from what is right. The parcel has gone astray.
The physical sense covers post and the moral sense covers people, and both are old. Things that go astray in the post are usually delivered somewhere rather than actually lost.
1phrasego astrayTo become lost, or to wander from what is right.
“Two of the applications appear to go astray every year.”
go astray is a phrase.
Practised in Phrasal Verbs