Not being able to open README.MD file on Android app

[MarchewaKozak]

⚠️ 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. Install nextcloud on android phone
2. Login
3. Try to open and edit README.md (to edit the top bar)
4. See the full error

Expected behaviour

The file should open in the Nextcloud app and be editable there without installing anything else since the program is an ecosystem.

Actual behaviour

When opening README.md there is a java error

Android version

16

Device brand and model

Samsung Galaxy S25

Stock or custom OS?

Stock

Nextcloud android app version

33.0.1

Nextcloud server version

Latest as of 20th April 2026

Using a reverse proxy?

No

Android logs

Cause of error

Exception in thread "Thread-75" java.lang.NullPointerException: Attempt to invoke interface method 'com.owncloud.android.ui.helpers.FileOperationsHelper com.owncloud.android.ui.fragment.FileFragment$ContainerActivity.getFileOperationsHelper()' on a null object reference
    at com.owncloud.android.ui.preview.PreviewTextStringFragment.lambda$edit$1(PreviewTextStringFragment.java:139)
    at com.owncloud.android.ui.preview.PreviewTextStringFragment.$r8$lambda$_MpHYWLzP65yyRQaF66kF_Bz0rY(Unknown Source:0)
    at com.owncloud.android.ui.preview.PreviewTextStringFragment$$ExternalSyntheticLambda0.run(D8$$SyntheticClass:0)
    at java.lang.Thread.run(Thread.java:1564)

App information

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

Device information

• Brand: samsung
• Device: pa1q
• Model: SM-S931B
• Id: BP2A.250605.031.A3
• Product: pa1qxeea

Firmware

• SDK: 36
• Release: 16
• Incremental: S931BXXS8BZC1

Server error logs

Additional information

No response