malformed syntax

[lynhnn]

the request could not be understood by the server due to malformed syntax

My basic rest API was working until 4/29/2022 and now I got the above error. Please help me to fix my JSON (?). I changed the URL POST to 'https://webexapis.com/v1/messages'  from 'https://api.ciscospark.com/v1/messages' and the body is just like 

let body = {

toPersonEmail: email,

text: text,

markdown: markdown

}

but I still get the same error.

Thanks.

[Rudrakshi]

I believe you have reported the issue with Developer Support and it is now resolved as per the response from Gasper on the ticket:

The issue was because you are not including the contentType in the request headers.