Cookie不会在同一域的不同页面之间持久存在

in part of my code i save a cookie like this

if encoded, err := s.Encode(USER_ID_COOKIE_NAME, value); err == nil {
            user_id := &http.Cookie{
                Name:  USER_ID_COOKIE_NAME,
                Value: encoded,
                Path:  "/",
                HttpOnly: true,
            }
            http.SetCookie(w, user_id)
        }0

when i do, it saves a cookie but when i try to go to another path, the cookie isnt there.

for example: once logged in, im at path "/oauth/square", when i then click on a link to "/settings" my cookie is gone. I can confirm the cookie is set while at the initial path. I've included an image of the cookie in my browser as well. How can i set the cookie so it persists anywhere while on that domain?

the solution was to set the Domain. once i did that everything worked as expected.