Nextcloud not uploading documents from Android phone

[gugiar]

⚠️ 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

When I try to upload any document from my phone to my nextcloud account (when using the nextcloud app) it does nothing. When I tried to upload directly from a third app (example, sending an invoice from my banking app or WhatsApp to my Nextcloud), I receive an error message:

Cause of error

Exception in thread "main" java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.Set com.owncloud.android.ui.adapter.ReceiveExternalFilesAdapter.getFileNames()' on a null object reference
    at com.owncloud.android.ui.activity.ReceiveExternalFilesActivity.lambda$getFileNameTextWatcher$6(ReceiveExternalFilesActivity.java:907)
    at com.owncloud.android.ui.activity.ReceiveExternalFilesActivity.$r8$lambda$7aQSDlHWZ2ECuUzMqE_fcn8_TAk(Unknown Source:0)
    at com.owncloud.android.ui.activity.ReceiveExternalFilesActivity$$ExternalSyntheticLambda11.invoke(D8$$SyntheticClass:0)
    at com.nextcloud.utils.fileNameValidator.FileNameTextWatcher.afterTextChanged(FileNameTextWatcher.kt:43)
    at android.widget.TextView.sendAfterTextChanged(TextView.java:12765)
    at android.widget.TextView$ChangeWatcher.afterTextChanged(TextView.java:16366)
    at android.text.SpannableStringBuilder.sendAfterTextChanged(SpannableStringBuilder.java:1278)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:578)
    at androidx.emoji2.text.SpannableBuilder.replace(SpannableBuilder.java:308)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:508)
    at androidx.emoji2.text.SpannableBuilder.replace(SpannableBuilder.java:298)
    at androidx.emoji2.text.SpannableBuilder.replace(SpannableBuilder.java:48)
    at android.view.inputmethod.BaseInputConnection.replaceTextInternal(BaseInputConnection.java:1026)
    at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:962)
    at android.view.inputmethod.BaseInputConnection.commitText(BaseInputConnection.java:241)
    at com.android.internal.inputmethod.EditableInputConnection.commitText(EditableInputConnection.java:220)
    at android.view.inputmethod.InputConnectionWrapper.commitText(InputConnectionWrapper.java:207)
    at android.view.inputmethod.RemoteInputConnectionImpl.lambda$commitText$17(RemoteInputConnectionImpl.java:670)
    at android.view.inputmethod.RemoteInputConnectionImpl.$r8$lambda$jNtA8MXobPnaECkNr8D9WTYrxk0(Unknown Source:0)
    at android.view.inputmethod.RemoteInputConnectionImpl$$ExternalSyntheticLambda46.run(D8$$SyntheticClass:0)
    at android.os.Handler.handleCallback(Handler.java:959)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loopOnce(Looper.java:311)
    at android.os.Looper.loop(Looper.java:408)
    at android.app.ActivityThread.main(ActivityThread.java:9119)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:627)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:970)

App information

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

Device information

• Brand: Infinix
• Device: Infinix-X6852
• Model: Infinix X6852
• Id: AP3A.240905.015.A2
• Product: X6852-OP

Firmware

• SDK: 35
• Release: 15
• Incremental: 170028

Expected behaviour

Upload the files correctly to my Nextcloud account.

Actual behaviour

When I try to upload any document from my phone to my nextcloud account, it does nothing. When I tried to upload directly from a third app, I receive an error message:

Cause of error

Exception in thread "main" java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.Set com.owncloud.android.ui.adapter.ReceiveExternalFilesAdapter.getFileNames()' on a null object reference
    at com.owncloud.android.ui.activity.ReceiveExternalFilesActivity.lambda$getFileNameTextWatcher$6(ReceiveExternalFilesActivity.java:907)
    at com.owncloud.android.ui.activity.ReceiveExternalFilesActivity.$r8$lambda$7aQSDlHWZ2ECuUzMqE_fcn8_TAk(Unknown Source:0)
    at com.owncloud.android.ui.activity.ReceiveExternalFilesActivity$$ExternalSyntheticLambda11.invoke(D8$$SyntheticClass:0)
    at com.nextcloud.utils.fileNameValidator.FileNameTextWatcher.afterTextChanged(FileNameTextWatcher.kt:43)
    at android.widget.TextView.sendAfterTextChanged(TextView.java:12765)
    at android.widget.TextView$ChangeWatcher.afterTextChanged(TextView.java:16366)
    at android.text.SpannableStringBuilder.sendAfterTextChanged(SpannableStringBuilder.java:1278)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:578)
    at androidx.emoji2.text.SpannableBuilder.replace(SpannableBuilder.java:308)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:508)
    at androidx.emoji2.text.SpannableBuilder.replace(SpannableBuilder.java:298)
    at androidx.emoji2.text.SpannableBuilder.replace(SpannableBuilder.java:48)
    at android.view.inputmethod.BaseInputConnection.replaceTextInternal(BaseInputConnection.java:1026)
    at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:962)
    at android.view.inputmethod.BaseInputConnection.commitText(BaseInputConnection.java:241)
    at com.android.internal.inputmethod.EditableInputConnection.commitText(EditableInputConnection.java:220)
    at android.view.inputmethod.InputConnectionWrapper.commitText(InputConnectionWrapper.java:207)
    at android.view.inputmethod.RemoteInputConnectionImpl.lambda$commitText$17(RemoteInputConnectionImpl.java:670)
    at android.view.inputmethod.RemoteInputConnectionImpl.$r8$lambda$jNtA8MXobPnaECkNr8D9WTYrxk0(Unknown Source:0)
    at android.view.inputmethod.RemoteInputConnectionImpl$$ExternalSyntheticLambda46.run(D8$$SyntheticClass:0)
    at android.os.Handler.handleCallback(Handler.java:959)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loopOnce(Looper.java:311)
    at android.os.Looper.loop(Looper.java:408)
    at android.app.ActivityThread.main(ActivityThread.java:9119)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:627)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:970)

App information

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

Device information

• Brand: Infinix
• Device: Infinix-X6852
• Model: Infinix X6852
• Id: AP3A.240905.015.A2
• Product: X6852-OP

Firmware

• SDK: 35
• Release: 15
• Incremental: 170028

Android version

15.1.2

Device brand and model

Infinix 40 note

Stock or custom OS?

Stock

Nextcloud android app version

33.1.0

Nextcloud server version

33.0.2

Using a reverse proxy?

I don't know

Android logs

No response

Server error logs

Additional information

No response