Pages can't create or open documents "com.apple.Documentmanager Error 1"
I had an issue with Pages today and was unable to create a new document or use a template. I got an error message "com.apple.Documentmanager Error 1" After resetting the iPad and reinstalling pages a couple of times I searched on here to discover other people having the issue.
I've fixed it now and wanted to share what worked in case anyone else comes across this error.
Go into the files app and launch an existing file from the Pages folder on your device. Once the file had opened Pages is up and running again. Hope that helps anyone else who has the issue.
iPad Pro 10.5-inch, Wi-Fi, Cellular