google chrome devtools - JSON response format error - red dotullet before response

Question

I am sending an AJAX request expecting JSON response. However, the returned JSON is preceded with a red dotullet which is causing a parse error.

Here is a screenshot from Postman:

The dot is not shown on Raw or Preview display, only on Pretty.

In Chrome Dev Tools Network tab it appears under Response. Preview is shown normally as if the dot isn't there.

Answer 1

As mentioned in a comment before: In Chrome, red dots usually represent non-printable special unicode characters.

Please check your server side code to prevent outputting those characters