react warning cannot set state when using promises

Question

I\'m trying to query the server to get list of nav items so I can build my menu on init. I\'ve so far managed to create a static page with 3 contents on the home page, which

Answer 1

You will try this

     fetch(url)
        .then((response) => {
               let jsonData=response.json();
               this.setState({data:jsonData})
         })
        .catch((error) => {
               console.log("error---",error);
         })