问题 Using the Simple Upload Adapter, according to the CKEditor 5 documentation upon a successful image upload, the server should return either: This for a single image: { default: 'http://example.com/images/image–default-size.png' } Or this for multiple (i.e. for the srcset attribute) { default: 'http://example.com/images/image–default-size.png', '160': 'http://example.com/images/image–size-160.image.png', '500': 'http://example.com/images/image–size-500.image.png', '1000': 'http://example.com