I got an error message when building IOS version of my app. It happened in configuring NSBundle stage. "Failed to resize image : AppIcon1024x1024.png. (Error : Input file is missing or of an unsupported image format) at /usr/local/turtle-js/node_modules/xdl/build/detach/IosIcons.js:104:21 " It sounds obvious the appicon is missing, but in my app.json file , I have an icon and the size I've already resized to 1024x1024. Could anyone help me? Thank you!