Defect in Advanced REST client plugin : The Input payload cannot be null
ERROR SCREENSHOT
Please find below points after discussion with the engineering team
The library which we are using in the Advanced REST Client plugin to send HTTP requests does not have the option to pass the request body for HTTP GET requests.
Ideally, the HTTP GET method should never have a body section. This is the reason many libraries does not even give that option.
We will check with the team and let you know if we want to give this support in the next plugin release if possible. Currently, it is not supported in our plugin.