Hi everyone,

I have found a problem when serializing a map to JSON.

I use the following map as request body for the http-client:

map {

  'username' : "aaa",

  'password' : "bbb",

  'grant_type' : 'password'

} => json:serialize()

In 10.4 everything works fine.

In 12.0 this now leads to an error when I send the request.

(Response from service: <code type="number">400</code><message>Invalid json message received</message>)

It seems that the request body is being escaped twice when interacting with the http client. If I omit json:serialize(), it works fine in BaseX 12.

I would expect json:serialize() to recognize the map(*) data type and serialize it correctly.

Best regards

Andreas