When storing in an app group as explained by BrandonK212, https://developer.apple.com/forums/thread/716902?answerId=731691022#731691022, it seems like using a combination of Data(contentsOf:) with a file URL and UIImage(data:) worked for me, where UIImage(contentsOfFile:) did not. Related thread that suggests Apple recommends the app group approach at least: https://developer.apple.com/forums/thread/715170

I'm seeing similar issues, I can't get general colours to be forced to be what I want, even when just wanting black vs white... It's changing gradients and backgrounds of images that are expecting black always, so that content on top can be white and visible, but instead get forced white meaning it's not visible... I thought I could get away with using something like widgetAccentable(false) but it doesn't do anything: // this gets forced white... Color.black // this does nothing .widgetAccentable(false) .overlay( Image(uiImage: image) .resizable() .widgetAccentedRenderingMode(.fullColor) .aspectRatio(contentMode: .fit) .clipped() .padding(padding) )

Did you find a solution? My best solution so far was to store an error flag in the user defaults shared between my app and widgets and in the timeline provider return an entry that shows an error, and within that UI have another Intent that 'resets' the error flag and lets it reload.