No converter for with preset content-type ‘null’

Error: no converter for with preset content-type ‘null’

An error message is displayed indicating that there is no converter available for the provided preset content-type of ‘null’.

When sending a request or receiving a response in an HTTP call, content negotiation plays a crucial role in determining the format of the data being transferred. The supported content types vary based on the API or server being used.

In this case, it seems that the provided content-type of ‘null’ is not recognized or supported by the converter being used in the API or application.

To resolve this issue, you need to specify a valid content-type that is supported by the converter. The commonly used content types include:

• application/json: Used for transferring JSON data.
• application/xml: Used for transferring XML data.
• text/plain: Used for transferring plain text.
• multipart/form-data: Used for uploading files.
• application/x-www-form-urlencoded: Used for sending form data.

Here is an example of how to specify the content-type in an API call using the axios library in JavaScript:

axios.post('/api/endpoint', data, {
  headers: {
    'Content-Type': 'application/json'
  }
})
  .then(response => {
    // Handle response
  })
  .catch(error => {
    // Handle error
  });

In the above example, the content-type ‘application/json’ is specified in the headers of the POST request. This tells the server that the data being sent is in JSON format.

Make sure to consult the API documentation or contact the API provider to determine the supported content types and use the appropriate one in your request.