cannot find type `Json` in module `content` in rust rocket

Question

Today when I using cargo cargo 1.59.0 (49d8809dc 2022-02-10) compile the rust rustc 1.59.0 (9d1b2106e 2022-02-23) project, shows error:

error[E0412]: cannot find type `Json` in module `content`
  --> src/common/util/model_convert.rs:35:50
   |
35 | pub fn box_rest_response<T>(data: T) -> content::Json<String> where T: Serialize + Default {
   |                                                  ^^^^ not found in `content`
   |
help: consider importing one of these items
   |
1  | use diesel::pg::types::sql_types::Json;
   |
1  | use diesel::types::Json;
   |
1  | use rocket::serde::json::Json;
   |

error[E0425]: cannot find function, tuple struct or tuple variant `Json` in module `content`
  --> src/common/util/model_convert.rs:41:21
   |
41 |     return content::Json(response_json);
   |                     ^^^^ not found in `content`

this is the code where going wrong：

use diesel::QueryResult;
use rocket::response::content;
use rocket::serde::json::serde_json;
use serde::Serialize;
use crate::model::response::api_response::ApiResponse;
use crate::model::response::pagination::Pagination;
use crate::model::response::pagination_response::PaginationResponse;

pub fn box_error_rest_response <T>(data: T, result_code: String, msg: String) -> content::Json<String> where T: Serialize + Default {
    let res = ApiResponse {
        result: data,
        statusCode: "200".to_string(),
        resultCode: result_code,
        msg
    };
    let response_json = serde_json::to_string(&res).unwrap();
    return content::Json(response_json);
}

the content::Json was come from rocket rocket = { version = "0.5.0-rc.1", features = ["json"] }. The public lib works fine in the past time, I did not know why come out this error today. what should I do to fixed this problem? I tried to make a minimal demo main.rs like this:

#[macro_use]
extern crate rocket;

use rocket::{Build, Rocket, routes};
use rocket::response::content;

#[launch]
async fn rocket() -> _ {
    build_rocket()
}

#[get("/health")]
pub fn health() -> content::Json<String> {
    return content::Json("ok".parse().unwrap());
}

fn build_rocket() -> Rocket<Build> {
    rocket::build()
        .mount("/actuator", routes![
            health
        ])
}

but it works fine and did not told that cannot find type Json in module content.