[Bug]: Exporting from Oneplus Document Scanner shows "Not Found" page

[Xenomer]

What happened?

Exporting a pdf/image using the Oneplus Camera's "Doc Scanner" function shows a "not found" page

Steps to reproduce

1. Scan a document using Oneplus Camera's "Doc Scanner" feature
2. Export it using image/pdf (neither works) and select Paperless Mobile from the os "Open with" pop-up
3. A "Not found" error is shown, with text "GoException: no routes for location: content://media/external_primary/file/"
4. Also pressing "Home" shows same GoException, for route /

Log output from the app

03-23 16:33:03.643 24812 24812 I flutter : 2026-03-23 16:33:03.642      ERROR   --- [                         ] - main                     :
An unexpected error occurred
03-23 16:33:03.687 24812 24812 I flutter : ---BEGIN ERROR---
03-23 16:33:03.688 24812 24812 I flutter : type 'Null' is not a subtype of type 'String'
03-23 16:33:03.689 24812 24812 I flutter : ---END ERROR---
03-23 16:33:03.708 24812 24812 I flutter : ---BEGIN STACKTRACE---
03-23 16:33:03.709 24812 24812 I flutter : #0      new SharedMediaFile.fromMap
(package:listen_sharing_intent/src/data/shared_media_file.dart:34)
03-23 16:33:03.709 24812 24812 I flutter : #1      ReceiveSharingIntentMobile.getMediaStream.<anonymous closure>.<anonymous closure>
(package:listen_sharing_intent/src/listen_sharing_intent_mobile.dart:41)
03-23 16:33:03.709 24812 24812 I flutter : #2      MappedIterable.elementAt (dart:_internal/iterable.dart:402)
03-23 16:33:03.709 24812 24812 I flutter : #3      ListIterator.moveNext (dart:_internal/iterable.dart:371)
03-23 16:33:03.709 24812 24812 I flutter : #4      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:194)
03-23 16:33:03.709 24812 24812 I flutter : #5      new _GrowableList.of (dart:core-patch/growable_array.dart:154)
03-23 16:33:03.709 24812 24812 I flutter : #6      new List.of (dart:core-patch/array_patch.dart:39)
03-23 16:33:03.709 24812 24812 I flutter : #7      ListIterable.toList (dart:_internal/iterable.dart:224)
03-23 16:33:03.709 24812 24812 I flutter : #8      ReceiveSharingIntentMobile.getMediaStream.<anonymous closure>
(package:listen_sharing_intent/src/listen_sharing_intent_mobile.dart:42)
03-23 16:33:03.709 24812 24812 I flutter : #9      _HandlerEventSink.add (dart:async/stream_transformers.dart:230)
03-23 16:33:03.709 24812 24812 I flutter : #10     _SinkTransformerStreamSubscription._handleData
(dart:async/stream_transformers.dart:115)
03-23 16:33:03.709 24812 24812 I flutter : #11     _rootRunUnary (dart:async/zone.dart:1538)
03-23 16:33:03.709 24812 24812 I flutter : #12     _CustomZone.runUnary (dart:async/zone.dart:1429)
03-23 16:33:03.709 24812 24812 I flutter : #13     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1329)
03-23 16:33:03.709 24812 24812 I flutter : #14     CastStreamSubscription._onData (dart:_internal/async_cast.dart:95)
03-23 16:33:03.709 24812 24812 I flutter : #15     _rootRunUnary (dart:async/zone.dart:1538)
03-23 16:33:03.709 24812 24812 I flutter : #16     _CustomZone.runUnary (dart:async/zone.dart:1429)
03-23 16:33:03.709 24812 24812 I flutter : #17     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1329)
03-23 16:33:03.709 24812 24812 I flutter : #18     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:381)
03-23 16:33:03.709 24812 24812 I flutter : #19     _DelayedData.perform (dart:async/stream_impl.dart:573)
03-23 16:33:03.709 24812 24812 I flutter : #20     _PendingEvents.handleNext (dart:async/stream_impl.dart:678)
03-23 16:33:03.709 24812 24812 I flutter : #21     _PendingEvents.schedule.<anonymous closure> (dart:async/stream_impl.dart:649)
03-23 16:33:03.709 24812 24812 I flutter : #22     _rootRun (dart:async/zone.dart:1517)
03-23 16:33:03.709 24812 24812 I flutter : #23     _CustomZone.run (dart:async/zone.dart:1422)
03-23 16:33:03.709 24812 24812 I flutter : #24     _CustomZone.runGuarded (dart:async/zone.dart:1321)
03-23 16:33:03.709 24812 24812 I flutter : #25     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1362)
03-23 16:33:03.709 24812 24812 I flutter : #26     _rootRun (dart:async/zone.dart:1525)
03-23 16:33:03.709 24812 24812 I flutter : #27     _CustomZone.run (dart:async/zone.dart:1422)
03-23 16:33:03.709 24812 24812 I flutter : #28     _CustomZone.runGuarded (dart:async/zone.dart:1321)
03-23 16:33:03.709 24812 24812 I flutter : #29     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1362)
03-23 16:33:03.709 24812 24812 I flutter : #30     _microtaskLoop (dart:async/schedule_microtask.dart:40)
03-23 16:33:03.709 24812 24812 I flutter : #31     _startMicrotaskLoop (dart:async/schedule_microtask.dart:49)
03-23 16:33:03.709 24812 24812 I flutter :
03-23 16:33:03.709 24812 24812 I flutter : ---END STACKTRACE---
03-23 16:33:03.727 24812 24812 I flutter : 2026-03-23 16:33:03.727      TRACE   --- [              HTTPRequest] - GET                      :
/api/profile/
03-23 16:33:03.729 24812 24812 I flutter : 2026-03-23 16:33:03.727      TRACE   --- [              HTTPRequest] - GET                      :
/api/tags/
03-23 16:33:03.729 24812 24812 I flutter : 2026-03-23 16:33:03.728      TRACE   --- [              HTTPRequest] - GET                      :
/api/saved_views/
03-23 16:33:03.870 24812 24812 I flutter : 2026-03-23 16:33:03.870      TRACE   --- [             HTTPResponse] - GET                      :
/api/profile/ - 200
03-23 16:33:03.871 24812 24812 I flutter : 2026-03-23 16:33:03.871      TRACE   --- [             HTTPResponse] - GET                      :
/api/saved_views/ - 200
03-23 16:33:03.873 24812 24812 I flutter : 2026-03-23 16:33:03.872      TRACE   --- [              HTTPRequest] - GET                      :
/api/ui_settings/
03-23 16:33:03.873 24812 24812 I flutter : 2026-03-23 16:33:03.873      TRACE   --- [             HTTPResponse] - GET                      :
/api/tags/ - 200
03-23 16:33:03.906 24812 24812 I flutter : 2026-03-23 16:33:03.906      TRACE   --- [             HTTPResponse] - GET                      :
/api/ui_settings/ - 200
03-23 16:33:03.907 24812 24812 I flutter : 2026-03-23 16:33:03.907      TRACE   --- [              HTTPRequest] - GET                      :
/api/remote_version/
03-23 16:33:04.055 24812 24812 I flutter : 2026-03-23 16:33:04.055      TRACE   --- [             HTTPResponse] - GET                      :
/api/remote_version/ - 200

Screenshots

Paperless-ng*x Version

2.20.13 #dev

Paperless-Mobile Version

4.3.2+660

Device

Oneplus 13

Operating System Version

OxygenOS 16.0.3 (Android 16)

Device Locale

english

Selected Locale

None

Additional Context

No response

[astubenbord]

Do you share the file with paperless mobile or are you trying to open it using the app?

[Xenomer]

In the scanner tool it's just an "Export" button, but given the screenshotted "Open with" modal I assume it's trying to open the pdf file using the app.

[astubenbord]

Hm I guess I expected the behavior to be similar, but seems that the app is opened with a deep link linking the file when opening a document with the app. Could you try to share it with the app instead of opening until it is fixed?

[Xenomer]

Yes, I believe i can export to gallery and manually import from there for the time being :)

[astubenbord]

@Xenomer could you check if this is fixed in 4.3.5?

[Xenomer]

Exporting a pdf file seems to work now, but exporting png opens either the home page, or setup page (seemingly randomly, and after reopening the app manually it is clearly logged in properly, don't know what thats about).

logs when trying to export a png:

04-01 10:42:02.627   468   497 D nativeloader: Load /data/app/~~T3M5ed4j82cGB3saDlaDGg==/de.astubenbord.paperless_mobil
e-cX1ruIiS_WSotgBx3WsbDg==/base.apk!/lib/arm64-v8a/libflutter.so using class loader ns clns-9
(caller=/data/app/~~T3M5ed4j82cGB3saDlaDGg==/de.astubenbord.paperless_mobile-cX1ruIiS_WSotgBx3WsbDg==/base.apk): ok
04-01 10:42:02.657   468   499 I flutter :
[IMPORTANT:flutter/shell/platform/android/android_context_vk_impeller.cc(62)] Using the Impeller rendering backend
(Vulkan).
04-01 10:42:02.706   468   468 E FileDirectory:         at
io.flutter.plugins.GeneratedPluginRegistrant.registerWith(SourceFile:231)
04-01 10:42:02.762   468   468 I flutter : Logging files to
/storage/emulated/0/Android/data/de.astubenbord.paperless_mobile/files/documents/logs/2026-04-01.log.
04-01 10:42:02.848   468   468 I flutter : 2026-04-01 10:42:02.848      INFO    --- [      _GoRouterShellState] -
_setOptimalDisplayMode   : Setting refresh rate to 120.00000762939453
04-01 10:42:02.875   468   468 I flutter : 2026-04-01 10:42:02.875      TRACE   --- [              HTTPRequest] - GET
               : /api/remote_version/
04-01 10:42:03.722   468   468 I flutter : 2026-04-01 10:42:03.722      TRACE   --- [             HTTPResponse] - GET
               : /api/remote_version/ - 200
04-01 10:42:03.727   468   468 I flutter : 2026-04-01 10:42:03.723      DEBUG   --- [      AuthenticationCubit] -
restoreSession           : Session restored for Xenomer@do***ev.
04-01 10:42:03.729   468   468 I flutter : 2026-04-01 10:42:03.729      TRACE   --- [              HTTPRequest] - GET
               : /api/profile/
04-01 10:42:03.801   468   468 I flutter : 2026-04-01 10:42:03.801      TRACE   --- [             HTTPResponse] - GET
               : /api/profile/ - 200
04-01 10:42:03.802   468   468 I flutter : 2026-04-01 10:42:03.802      TRACE   --- [              HTTPRequest] - GET
               : /api/ui_settings/
04-01 10:42:03.857   468   468 I flutter : 2026-04-01 10:42:03.857      TRACE   --- [             HTTPResponse] - GET
               : /api/ui_settings/ - 200
04-01 10:42:03.858   468   468 I flutter : 2026-04-01 10:42:03.858      TRACE   --- [              HTTPRequest] - GET
               : /api/remote_version/
04-01 10:42:03.890   468   468 I flutter : 2026-04-01 10:42:03.890      TRACE   --- [             HTTPResponse] - GET
               : /api/remote_version/ - 200
04-01 10:42:03.905   468   468 I flutter : 2026-04-01 10:42:03.905      ERROR   --- [                         ] - main
               : An unexpected error occurred
04-01 10:42:03.906   468   468 I flutter : ---BEGIN ERROR---
04-01 10:42:03.907   468   468 I flutter : type 'Null' is not a subtype of type 'String'
04-01 10:42:03.908   468   468 I flutter : ---END ERROR---
04-01 10:42:03.908   468   468 I flutter : ---BEGIN STACKTRACE---
04-01 10:42:03.909   468   468 I flutter : #0      new SharedMediaFile.fromMap
(package:listen_sharing_intent/src/data/shared_media_file.dart:34)
04-01 10:42:03.909   468   468 I flutter : #1      ReceiveSharingIntentMobile.getInitialMedia.<anonymous closure>
(package:listen_sharing_intent/src/listen_sharing_intent_mobile.dart:25)
04-01 10:42:03.909   468   468 I flutter : #2      MappedIterable.elementAt (dart:_internal/iterable.dart:402)
04-01 10:42:03.909   468   468 I flutter : #3      ListIterator.moveNext (dart:_internal/iterable.dart:371)
04-01 10:42:03.909   468   468 I flutter : #4      new _GrowableList._ofEfficientLengthIterable
(dart:core-patch/growable_array.dart:194)
04-01 10:42:03.909   468   468 I flutter : #5      new _GrowableList.of (dart:core-patch/growable_array.dart:154)
04-01 10:42:03.909   468   468 I flutter : #6      new List.of (dart:core-patch/array_patch.dart:39)
04-01 10:42:03.909   468   468 I flutter : #7      ListIterable.toList (dart:_internal/iterable.dart:224)
04-01 10:42:03.909   468   468 I flutter : #8      ReceiveSharingIntentMobile.getInitialMedia
(package:listen_sharing_intent/src/listen_sharing_intent_mobile.dart:26)
04-01 10:42:03.909   468   468 I flutter : <asynchronous suspension>
04-01 10:42:03.909   468   468 I flutter : #9      _EventListenerShellState.initState.<anonymous closure>
(package:paperless_mobile/features/sharing/view/widgets/event_listener_shell.dart:41)
04-01 10:42:03.909   468   468 I flutter : <asynchronous suspension>
04-01 10:42:03.909   468   468 I flutter :
04-01 10:42:03.909   468   468 I flutter : ---END STACKTRACE---
04-01 10:42:03.910   468   468 I flutter : 2026-04-01 10:42:03.907      TRACE   --- [              HTTPRequest] - GET
               : /api/tags/
04-01 10:42:03.910   468   468 I flutter : 2026-04-01 10:42:03.907      TRACE   --- [              HTTPRequest] - GET
               : /api/statistics/
04-01 10:42:03.910   468   468 I flutter : 2026-04-01 10:42:03.907      TRACE   --- [              HTTPRequest] - GET
               : /api/saved_views/
04-01 10:42:03.911   468   468 I flutter : 2026-04-01 10:42:03.907      TRACE   --- [              HTTPRequest] - GET
               : /api/tags/
04-01 10:42:03.990   468   468 I flutter : 2026-04-01 10:42:03.990      TRACE   --- [             HTTPResponse] - GET
               : /api/tags/ - 200
04-01 10:42:04.067   468   468 I flutter : 2026-04-01 10:42:04.067      TRACE   --- [             HTTPResponse] - GET
               : /api/tags/ - 200
04-01 10:42:04.080   468   468 I flutter : 2026-04-01 10:42:04.080      TRACE   --- [             HTTPResponse] - GET
               : /api/saved_views/ - 200
04-01 10:42:04.098   468   468 I flutter : 2026-04-01 10:42:04.098      TRACE   --- [             HTTPResponse] - GET
               : /api/statistics/ - 200

[astubenbord]

@Xenomer with setup page you mean the initial login screen where you have to enter your address?

[Xenomer]

@Xenomer with setup page you mean the initial login screen where you have to enter your address?

Yes.

[astubenbord]

Okay, might be a race condition, I'll look into it.