Update imageUpload.js

imageUpload.js

@@ -31,7 +31,7 @@ function uploadImagesAndGetFullUrls(uploadEndpoint, hostUrl, files) {
     return Promise.all(compressPromises)
         .then(compressedFiles => {
             compressedFiles.forEach(compressedFile => {
-                formData.append('file[]', files, compressedFile);
+                formData.append("files", 'file[]', compressedFile);
             });
 
             return fetch(`${uphost}${uploadEndpoint}`, {