By declaring the CFBundleDocumentTypes key in your app, you've indicated that your app is able to open documents. Please set the UISupportsDocumentBrowser key to 'YES' if your app uses a UIDocumentBrowserViewController. Otherwise, set the LSSupportsOpeningDocumentsInPlace key in the Info.plist to 'YES' (recommended) or 'NO' to specify whether the app can open files in place. All document-based apps must include one of these configurations. For more information, visit https://developer.apple.com/document-based-apps/.
da8e087a4e