recent file "couldn't be opened"
I have an iPhone 7 running iOS 13.2.3.
Five days ago, I created a document in Pages. Today, I wanted to work on it some more. The file icon has the iCloud icon in the upper right. Selecting the file results in the following error message:
The file "<filename.pages>" couldn't be opened.
Any clues as to what happened, and how I might recover the document? I tried emailing to myself, but the email comes with no attachments.
iPhone 7 Plus