auf $fetch umgestellt

components/Photo.vue

@@ -75,9 +75,12 @@ const {data: photos } = await useFetch('http://ubodroid-2:8081/api/v1/pho');
 
 const onAdvancedUpload = async (event) => {
     const files = event.files;
-    const imgUpload = await useFetch("http://ubodroid-2:8081/api/v1/upload", {
+    let fd = new FormData();
+    fd.append('files', files); 
+    console.log('fd = ', fd);
+    const imgUpload = await $fetch("http://ubodroid-2:8081/api/v1/upload", {
         method: "POST",
-        body: files,
+        body: fd,
       });
       if (imgUpload) {
         console.log(imgUpload);