I simply want to send a value to my rest api in a fetch method but can't seem to get it to work.
This is what I have currently:

React:

```
getFloorplans() {
        fetch('/api/ssid')
            .then(response => response.json())
            .then(message => {
                this.setState({
                    floorplan: message[0]
                })
            });

        fetch('/api/ssid', {
            method: "POST",

            //make sure to serialize your JSON body
            value: {ssid: this.state.SSID}
        })
            .then( (response => response.json()
                .then(message => {
                    console.log(message);
                })
        ))};

```

Spring boot rest api:

```
@RestController
public class FloorplanController {
    //Floorplan floorplan = new Floorplan();

    @RequestMapping("/api/ssid")
    public void someMethod(@RequestParam String value) {
        System.out.println(value);
    }
}

```

This is the error I'm currently getting:
[![enter image description here](https://i.stack.imgur.com/mPpNC.png)](https://i.stack.imgur.com/mPpNC.png)