finally able to save the picture

layouts/shortcodes/health-form.html

@@ -63,12 +63,14 @@
      /* data.delete("image"); */
 
      validate(data);
+     let obj = {};
+     data.forEach((value, key) => obj[key] = value);
 
      /* console.log(JSON.stringify(data)); */
      fetch("http://localhost:4242/health-form", {
          method: "POST",
          /* headers: {
-          *     "Content-Type": "multipart/form-data",
+          *     "Content-Type": "application/json",
           * }, */
          body: data
      }).then((res) => {