[firebase_storage]: The operation couldn’t be completed. Message too long

[feinstein]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Storage

Which platforms are affected?

iOS

Description

I am using an iOS simulator and when I try to upload a picture, I am getting this error:

[firebase_storage/unknown] The operation couldn’t be completed. Message too long

Reproducing the issue

Try running this code in an iOS Simulator with iOS 18.2:

import 'dart:io';

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:path/path.dart' as path;
import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_storage/firebase_storage.dart';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:pic_uploader/firebase_options.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
  await FirebaseAuth.instance.signInAnonymously();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  bool isUploading = false;
  final ImagePicker _picker = ImagePicker();
  final FirebaseStorage _storage = FirebaseStorage.instance;
  final FirebaseFirestore _firestore = FirebaseFirestore.instance;
  late final imagesStream = _firestore.collection('users').doc(FirebaseAuth.instance.currentUser?.uid ?? '').collection('images').orderBy('uploadedAt', descending: true).snapshots();

  Future<void> _uploadImages() async {
    try {
      final List<XFile> images = await _picker.pickMultiImage();

      for (var image in images) {
        final String fileName = path.basename(image.path);
        final userId = FirebaseAuth.instance.currentUser?.uid ?? '';

        // Create storage reference
        final storageRef = _storage.ref().child('users/$userId/images/$fileName');

        // Upload image
        setState(() => isUploading = true);
        await storageRef.putFile(File(image.path));

        // Get download URL
        final downloadUrl = await storageRef.getDownloadURL();

        // Save to Firestore
        await _firestore.collection('users').doc(userId).collection('images').add({
          'imageUrl': downloadUrl,
          'fileName': fileName,
          'uploadedAt': FieldValue.serverTimestamp(),
          'version': 1,
        });
      }
    } finally {
      setState(() => isUploading = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Column(
        children: [
          ElevatedButton(
            onPressed: _uploadImages,
            child: const Text('Upload Images'),
          ),
          if (isUploading) const CircularProgressIndicator(),
          Expanded(
            child: StreamBuilder<QuerySnapshot>(
              stream: imagesStream,
              builder: (context, snapshot) {
                if (!snapshot.hasData) return const CircularProgressIndicator();

                return GridView.builder(
                  gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                    crossAxisCount: 3,
                    crossAxisSpacing: 4,
                    mainAxisSpacing: 4,
                  ),
                  itemCount: snapshot.data!.docs.length,
                  itemBuilder: (context, index) {
                    final data = snapshot.data!.docs[index].data() as Map<String, dynamic>;
                    return Image.network(
                      data['imageUrl'],
                      loadingBuilder: (context, child, progress) {
                        if (progress == null) {
                          return child;
                        }
                        return Center(
                          child: CircularProgressIndicator(
                            value: progress.expectedTotalBytes != null ? progress.cumulativeBytesLoaded / progress.expectedTotalBytes! : null,
                          ),
                        );
                      },
                      fit: BoxFit.cover,
                    );
                  },
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}

Firebase Core version

3.10.1

Flutter Version

3.24.4

Relevant Log Output

[firebase_storage/unknown] The operation couldn’t be completed. Message too long

Flutter dependencies

Expand Flutter dependencies snippet

Dart SDK 3.5.4
Flutter SDK 3.24.4
pic_uploader 1.0.0+1

dependencies:
- cloud_firestore 5.6.2 [cloud_firestore_platform_interface cloud_firestore_web collection firebase_core firebase_core_platform_interface flutter meta]
- cupertino_icons 1.0.8
- firebase_auth 5.4.1 [firebase_auth_platform_interface firebase_auth_web firebase_core firebase_core_platform_interface flutter meta]
- firebase_core 3.10.1 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_storage 12.4.1 [firebase_core firebase_core_platform_interface firebase_storage_platform_interface firebase_storage_web flutter]
- flutter 0.0.0 [characters collection material_color_utilities meta vector_math sky_engine]
- image_picker 1.1.2 [flutter image_picker_android image_picker_for_web image_picker_ios image_picker_linux image_picker_macos image_picker_platform_interface image_picker_windows]
- path 1.9.0

dev dependencies:
- flutter_lints 4.0.0 [lints]
- flutter_test 0.0.0 [flutter test_api matcher path fake_async clock stack_trace vector_math leak_tracker_flutter_testing async boolean_selector characters collection leak_tracker leak_tracker_testing material_color_utilities meta source_span stream_channel string_scanner term_glyph vm_service]

transitive dependencies:
- _flutterfire_internals 1.3.50 [collection firebase_core firebase_core_platform_interface flutter meta]
- async 2.11.0 [collection meta]
- boolean_selector 2.1.1 [source_span string_scanner]
- characters 1.3.0
- clock 1.1.1
- cloud_firestore_platform_interface 6.6.2 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- cloud_firestore_web 4.4.2 [_flutterfire_internals cloud_firestore_platform_interface collection firebase_core firebase_core_web flutter flutter_web_plugins]
- collection 1.18.0
- cross_file 0.3.4+2 [meta web]
- fake_async 1.3.1 [clock collection]
- file_selector_linux 0.9.3+2 [cross_file file_selector_platform_interface flutter]
- file_selector_macos 0.9.4+2 [cross_file file_selector_platform_interface flutter]
- file_selector_platform_interface 2.6.2 [cross_file flutter http plugin_platform_interface]
- file_selector_windows 0.9.3+3 [cross_file file_selector_platform_interface flutter]
- firebase_auth_platform_interface 7.5.1 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_auth_web 5.13.7 [firebase_auth_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins http_parser meta web]
- firebase_core_platform_interface 5.4.0 [collection flutter flutter_test meta plugin_platform_interface]
- firebase_core_web 2.19.0 [firebase_core_platform_interface flutter flutter_web_plugins meta web]
- firebase_storage_platform_interface 5.2.1 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_storage_web 3.10.8 [_flutterfire_internals async firebase_core firebase_core_web firebase_storage_platform_interface flutter flutter_web_plugins http meta web]
- flutter_plugin_android_lifecycle 2.0.24 [flutter]
- flutter_web_plugins 0.0.0 [flutter characters collection material_color_utilities meta vector_math]
- http 1.3.0 [async http_parser meta web]
- http_parser 4.0.2 [collection source_span string_scanner typed_data]
- image_picker_android 0.8.12+20 [flutter flutter_plugin_android_lifecycle image_picker_platform_interface]
- image_picker_for_web 3.0.6 [flutter flutter_web_plugins image_picker_platform_interface mime web]
- image_picker_ios 0.8.12+2 [flutter image_picker_platform_interface]
- image_picker_linux 0.2.1+1 [file_selector_linux file_selector_platform_interface flutter image_picker_platform_interface]
- image_picker_macos 0.2.1+1 [file_selector_macos file_selector_platform_interface flutter image_picker_platform_interface]
- image_picker_platform_interface 2.10.1 [cross_file flutter http plugin_platform_interface]
- image_picker_windows 0.2.1+1 [file_selector_platform_interface file_selector_windows flutter image_picker_platform_interface]
- leak_tracker 10.0.5 [clock collection meta path vm_service]
- leak_tracker_flutter_testing 3.0.5 [flutter leak_tracker leak_tracker_testing matcher meta]
- leak_tracker_testing 3.0.1 [leak_tracker matcher meta]
- lints 4.0.0
- matcher 0.12.16+1 [async meta stack_trace term_glyph test_api]
- material_color_utilities 0.11.1 [collection]
- meta 1.15.0
- mime 2.0.0
- plugin_platform_interface 2.1.8 [meta]
- sky_engine 0.0.99
- source_span 1.10.0 [collection path term_glyph]
- stack_trace 1.11.1 [path]
- stream_channel 2.1.2 [async]
- string_scanner 1.2.0 [source_span]
- term_glyph 1.2.1
- test_api 0.7.2 [async boolean_selector collection meta source_span stack_trace stream_channel string_scanner term_glyph]
- typed_data 1.4.0 [collection]
- vector_math 2.1.4
- vm_service 14.2.5
- web 1.1.0

Additional context and comments

No response

[SelaseKay]

Hi @feinstein, I couldn't reproduce this issue on my end. Could you review the firebase_storage example to check if there’s anything you might have missed?

[feinstein]

Hi @SelaseKay I tried to copy-paste the example main inside my main, so it would use my firebase configurations, but I am getting another error now:

[feinstein]

@SelaseKay btw, I am not the first one to report this #12973

[SelaseKay]

Hi @feinstein, could you try commenting out the following block and testing again?

  if (defaultTargetPlatform != TargetPlatform.windows) {
    // window currently don't support storage emulator
    final emulatorHost =
        (!kIsWeb && defaultTargetPlatform == TargetPlatform.android)
            ? '10.0.2.2'
            : 'localhost';

    await FirebaseStorage.instance.useStorageEmulator(emulatorHost, 9199);
  }

The OP of the linked issue confirmed that an update resolved the problem on their end, so it seems the issue has been addressed.

[feinstein]

I removed that section and I get the original error

And I am already on the latest version 12.4.1