App crashes when opening folder after resetting encryption and re-encrypting (metadata is null exception)

[mybigfriendjo]

⚠️ Before posting ⚠️

• This is a bug, not a question or an enhancement.
• I've searched for similar issues and didn't find a duplicate.
• I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

1. Reset encryption in web app
2. open android app
3. set folder as encrypted
4. confirm mnemonics
5. tap/open encrypted folder
6. crash

Expected behaviour

Everything up to point 5
Actually opening showing the encrypted folder

Actual behaviour

App crashes

Android version

16

Device brand and model

Pixel 8 Pro

Stock or custom OS?

Stock

Nextcloud android app version

3.32.2

Nextcloud server version

30.0.12 (hetzner saas)

Using a reverse proxy?

I don't know

Android logs

Cause of error

Exception in thread "Thread-31" java.lang.IllegalStateException: metadata is null!
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:513)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:433)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:246)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1119)

App information

• ID: com.nextcloud.client
• Version: 30320290
• Build flavor: gplay

Device information

• Brand: google
• Device: husky
• Model: Pixel 8 Pro
• Id: BP2A.250805.005
• Product: husky

Firmware

• SDK: 36
• Release: 16
• Incremental: 13691446

Server error logs

Additional information

I'm not on a preview version or anything so I don't know where the logs are.
I'm using hetzner as host.

[alperozturk96]

@mybigfriendjo Hello

Thank you for the report.

Could you try with this version?

[mybigfriendjo]

I still seem to have the same issue. I didn't do the whole procedure again but just tried to open the folder again in the new app.

Cause of error

Exception in thread "Thread-40" java.lang.IllegalStateException: metadata is null!
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:508)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:428)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:249)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1119)

App information

• ID: com.nextcloud.client
• Version: 30320353
• Build flavor: gplay

Device information

• Brand: google
• Device: husky
• Model: Pixel 8 Pro
• Id: BP2A.250805.005
• Product: husky

Firmware

• SDK: 36
• Release: 16
• Incremental: 13691446

[rmelotte]

FWIW this is reproducible on 3.34.0.

I believe for me it started happening after the upgrade to NC 32.0.0 which disabled the e2ee app.

After enabling it again, e2ee files and folders have "hash-like" names, and pulling to refresh causes the exception shared in the OP.

[mybigfriendjo]

Tried again today as I had some time. Server version is 31.0.10 (Hetzner)

Still the same error on the gplay version

Cause of error

Exception in thread "Thread-24" java.lang.IllegalStateException: metadata is null!
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:543)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:463)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:274)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1563)

App information

• ID: com.nextcloud.client
• Version: 30350290
• Build flavor: gplay

Device information

• Brand: google
• Device: husky
• Model: Pixel 8 Pro
• Id: BP4A.260105.004.E1
• Product: husky

Firmware

• SDK: 36
• Release: 16
• Incremental: 14587043

[mybigfriendjo]

Server Version 32.0.6

Cause of error

Exception in thread "Thread-78" java.lang.IllegalStateException: metadata is null!
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:546)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:464)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:275)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1564)

App information

• ID: com.nextcloud.client
• Version: 330000190
• Build flavor: gplay

Device information

• Brand: google
• Device: husky
• Model: Pixel 8 Pro
• Id: CP1A.260305.018
• Product: husky

Firmware

• SDK: 36
• Release: 16
• Incremental: 14887507

[Hakbarth]

For me it happens when I try to upload a file

Cause of error

Exception in thread "Thread-29" java.lang.IllegalStateException: metadata is null!
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:546)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:464)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:275)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1564)

App information

• ID: com.nextcloud.client
• Version: 330010090
• Build flavor: generic

Device information

• Brand: samsung
• Device: e2s
• Model: SM-S926B
• Id: BP2A.250605.031.A3
• Product: e2sxxx

Firmware

• SDK: 36
• Release: 16
• Incremental: S926BXXSECZD1

[alperozturk96]

Hello

Fixed via:

#16916
#16944

Will be included in next version.