How to display the obtained json data as veb's json data in the simplest way

[Avey777]

@["/1688_detail/";get;post]
pub fn (app &App) fetch_1688_detail(mut ctx Context,offer_id string) veb.Result {
	req_body := query_product_detail(offer_id) or { return ctx.json({"code": "101", "msg": "offerid 必填"})}
	println(req_body)
	req := json2.raw_decode(req_body) or {return ctx.json({"code": "102", "msg": "json2 err"})}

	return ctx.json(req)
}

(base) root@Jengro:/home/jengro/dev/vprod# v run .
cgen error: json: can not decode `x.json2.Any` sumtype, too many numeric types (conflict of `f32` and `f64`), you can try to use alias for `f64` or compile v with `json_no_inline_sumtypes` flag
(base) root@Jengro:/home/jengro/dev/vprod#

---

If I use return ctx.text(req), the web page will show garbled characters
{"result":{"success":true,"code":"200","result":{"offerId":591978858852,"categoryId":1046799,"subject":"娆х編澶х爜濂宠2023澶忓鏂版浼戦棽鏃跺皻瑁欏瓙鏃跺皻鎷兼帴鎾炶壊杩炶。瑁�7356","subjectTrans":"European and American plus size women's clothing 2023 Summer new casual fashion skirt fashion stitching contrast color dress 7356",

[Avey777]

req_body itself is already in the json data format returned by the third-party API

[Avey777]

The original data format obtained using postman will not be garbled

[Avey777]

@["/1688_detail/";get;post]
pub fn (app &App) fetch_1688_detail(mut ctx Context,offer_id string) veb.Result {
req_body := query_product_detail(offer_id) or { return ctx.json({"code": "101", "msg": "offerid 必填"})}
println(req_body)
ctx.set_content_type('text/plain; charset=utf-8')
return ctx.text(req_body)
}

[Avey777]

ctx.set_content_type('text/plain; charset=utf-8')