Unexpected end of JSON input

Broken example

{
  "user": {
    "id": 42
}

Corrected example

{
  "user": {
    "id": 42
  }
}

Why this error happens

Unexpected end of JSON input usually points to a truncated payload, a missing closing brace or bracket, or an unfinished string. It is common when copying partial log output or when a request body is built incorrectly.

How to fix it

1. Check that every opening brace, bracket, and quote has a matching closing character.
2. Make sure the full payload was copied or generated.
3. Validate again after completing the missing structure.
4. Format the corrected JSON for readability.