Editing notes from Desktop Sync Client creates "File could not be synced" error

[MillironX]

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Describe the bug

Editing notes that have been uploaded from the Nextcloud desktop sync client will result in a "File could not be synced due to an error" in the Nextcloud desktop sync client

To Reproduce

1. Setup the Desktop sync client on one or more computers

2. Create a new note on the Desktop computer

    echo "# Note From Desktop\n\nThe quick brown fox..." >> ~/Nextcloud/Notes/"Note From Desktop.txt"

3. In the server Notes app, click "+ New Note," and type

   # Note From Server App
   
   The quick brown fox...

4. In the Notes app on the phone, pull down to synchronize notes

5. For both notes created above, open the note in the Notes app on the phone and add the text "Does this work?" and press the back button to save and synchronize the note

   

6. Wait for the change to be propagated to the Desktop sync client

7. Bonus: Edit "Note From Server.txt" on the Desktop computer, then repeat steps 5-6, and the error will be thrown for both files

Expected behavior

The files

• ~/Nextcloud/Notes/Note From Server App.txt
• ~/Nextcloud/Notes/Note From Desktop.txt

should both say "Does this work?" as their last line on the Desktop computer. Note that if the edits in step 5 are made from within the Server app or another Desktop computer, then the expected behavior is observed.

Actual behavior

The Desktop sync client reports

Note From Desktop.txt could not be synced due to an error

Examining the error report in the settings dialog reveals

Note/Note From Desktop.txt: The downloaded file does not match the checksum, it will be resumed <CHECKSUM> != <CHECKSUM>

The server app reflects the correct state of the files, however.

Screenshots

Smartphone (please complete the following information)

• Nextcloud Notes-Version (android app): 3.4.18
• F-Droid or Play Store: F-Droid
• Android-Version: 11 (LineageOS 18.1-20220104-microG-guacamole)
• Device: OnePlus 7 Pro (GM1917/Guacamole)

Server

• Nextcloud version: 21.0.1
• Nextcloud Notes version (server app): 4.2.0

[stefan-niedermann]

Hello and thank you very much for the very well described issue!

First of all, I doubt that this issue is actually caused by the Notes Android app - at least I can not imagine it 😉, therefore:

Are you able to reproduce this issue also, when you create the note from a Deskrop client, but edit it with the Notes server app?

[MillironX]

For all my testing I guess I hadn't tried that. You are correct, creating by the Desktop client and editing it in the Server app in step 5 gives the same error. Which repo do you think I should refile this issue in? https://github.com/nextcloud/notes, https://github.com/nextcloud/desktop, or somewhere else?

[stefan-niedermann]

https://github.com/nextcloud/notes should be the right place to post the issue 🙂

[MillironX]

Transferred over to nextcloud/notes#806