🐛 [firebase_ui_auth] Null value exception when refreshing browser after login

[adrianburkard]

Bug report

Describe the bug
After user has logged in to example app and refreshes the browser, it shows red null value exception screen.

Steps to reproduce

Steps to reproduce the behavior:

1. Start example app with browser
2. Login with an account
3. After profile screen is displayed, refresh website in browser
4. It shows Error: Unexpected null value

Expected behavior

The profile screen should be displayed.

Sample project

Use sample project from this repo

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Additional context

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Flutter doctor

Run flutter doctor and paste the output below:

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Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.3.9, on macOS 12.6 21G115 darwin-x64, locale de-CH)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 14.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2021.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2022.2.3)
[✓] VS Code (version 1.73.1)
[✓] Connected device (3 available)
[✓] HTTP Host Availability

• No issues found!

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Flutter dependencies

Run flutter pub deps -- --style=compact and paste the output below:

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Dart SDK 2.18.5
Flutter SDK 3.3.9
firebase_ui_example 1.0.0+1

dependencies:
- cupertino_icons 1.0.5
- firebase_auth 4.1.4 [firebase_auth_platform_interface firebase_auth_web firebase_core firebase_core_platform_interface flutter meta]
- firebase_core 2.3.0 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_ui_auth 1.1.0 [email_validator firebase_auth firebase_core firebase_dynamic_links firebase_ui_localizations firebase_ui_oauth flutter flutter_localizations flutter_svg]
- firebase_ui_localizations 1.0.1 [flutter flutter_localizations intl path]
- firebase_ui_oauth 1.1.0 [desktop_webview_auth firebase_auth firebase_ui_auth flutter_svg flutter]
- firebase_ui_oauth_apple 1.0.7 [firebase_auth firebase_ui_oauth flutter]
- firebase_ui_oauth_facebook 1.0.7 [firebase_auth firebase_ui_oauth flutter flutter_facebook_auth]
- firebase_ui_oauth_google 1.0.7 [firebase_auth firebase_ui_oauth flutter google_sign_in]
- firebase_ui_oauth_twitter 1.0.7 [flutter firebase_auth firebase_ui_oauth twitter_login]
- flutter 0.0.0 [characters collection material_color_utilities meta vector_math sky_engine]
- flutter_localizations 0.0.0 [flutter intl characters clock collection material_color_utilities meta path vector_math]
- flutter_svg 1.1.6 [flutter meta path_drawing vector_math xml]

dev dependencies:
- drive 1.0.0-1.0.nullsafety.5 [test_api flutter_test flutter_driver stack_trace flutter]
- flutter_driver 0.0.0 [file flutter flutter_test fuchsia_remote_debug_protocol path meta vm_service webdriver archive async boolean_selector characters clock collection crypto matcher material_color_utilities platform process source_span stack_trace stream_channel string_scanner sync_http term_glyph test_api typed_data vector_math]
- flutter_facebook_auth 4.4.1+1 [flutter flutter_facebook_auth_platform_interface flutter_facebook_auth_web]
- flutter_lints 2.0.1 [lints]
- flutter_test 0.0.0 [flutter test_api path fake_async clock stack_trace vector_math async boolean_selector characters collection matcher material_color_utilities meta source_span stream_channel string_scanner term_glyph]
- google_sign_in 5.4.2 [flutter google_sign_in_android google_sign_in_ios google_sign_in_platform_interface google_sign_in_web]
- http 0.13.5 [async http_parser meta path]
- integration_test 0.0.0 [flutter flutter_driver flutter_test path vm_service archive async boolean_selector characters clock collection crypto fake_async file matcher material_color_utilities meta source_span stack_trace stream_channel string_scanner sync_http term_glyph test_api typed_data vector_math webdriver]
- mockito 5.3.2 [analyzer build code_builder collection dart_style matcher meta path source_gen test_api]
- test 1.21.4 [analyzer async boolean_selector collection coverage http_multi_server io js node_preamble package_config path pool shelf shelf_packages_handler shelf_static shelf_web_socket source_span stack_trace stream_channel typed_data web_socket_channel webkit_inspection_protocol yaml test_api test_core]
- twitter_login 4.2.3 [flutter crypto http]

transitive dependencies:
- _fe_analyzer_shared 47.0.0 [meta]
- _flutterfire_internals 1.0.9 [cloud_firestore_platform_interface cloud_firestore_web collection firebase_core firebase_core_platform_interface flutter meta]
- analyzer 4.7.0 [_fe_analyzer_shared collection convert crypto glob meta package_config path pub_semver source_span watcher yaml]
- archive 3.3.0 [crypto path]
- args 2.3.1
- async 2.9.0 [collection meta]
- boolean_selector 2.1.0 [source_span string_scanner]
- build 2.3.1 [analyzer async convert crypto glob logging meta path]
- built_collection 5.1.1
- built_value 8.4.2 [built_collection collection fixnum meta]
- characters 1.2.1
- clock 1.1.1
- cloud_firestore_platform_interface 5.9.0 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- cloud_firestore_web 3.1.0 [_flutterfire_internals cloud_firestore_platform_interface collection firebase_core firebase_core_web flutter flutter_web_plugins js]
- code_builder 4.3.0 [built_collection built_value collection matcher meta]
- collection 1.16.0
- convert 3.1.1 [typed_data]
- coverage 1.5.0 [args logging package_config path source_maps stack_trace vm_service]
- crypto 3.0.2 [typed_data]
- dart_style 2.2.4 [analyzer args path pub_semver source_span]
- desktop_webview_auth 0.0.11 [crypto flutter http flutter_web_plugins plugin_platform_interface]
- email_validator 2.1.17
- fake_async 1.3.1 [clock collection]
- file 6.1.2 [meta path]
- firebase_auth_platform_interface 6.11.3 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_auth_web 5.1.3 [firebase_auth_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins http_parser intl js meta]
- firebase_core_platform_interface 4.5.2 [collection flutter flutter_test meta plugin_platform_interface]
- firebase_core_web 2.0.1 [firebase_core_platform_interface flutter flutter_web_plugins js meta]
- firebase_dynamic_links 5.0.6 [firebase_core firebase_core_platform_interface firebase_dynamic_links_platform_interface flutter meta plugin_platform_interface]
- firebase_dynamic_links_platform_interface 0.2.3+22 [_flutterfire_internals firebase_core flutter meta plugin_platform_interface]
- fixnum 1.0.1
- flutter_facebook_auth_platform_interface 3.2.0 [flutter plugin_platform_interface]
- flutter_facebook_auth_web 3.2.0 [flutter flutter_web_plugins js flutter_facebook_auth_platform_interface]
- flutter_web_plugins 0.0.0 [flutter js characters collection material_color_utilities meta vector_math]
- frontend_server_client 2.1.3 [async path]
- fuchsia_remote_debug_protocol 0.0.0 [process vm_service file meta path platform]
- glob 2.1.0 [async collection file path string_scanner]
- google_sign_in_android 6.1.4 [flutter google_sign_in_platform_interface]
- google_sign_in_ios 5.5.1 [flutter google_sign_in_platform_interface]
- google_sign_in_platform_interface 2.3.0 [flutter plugin_platform_interface quiver]
- google_sign_in_web 0.10.2 [flutter flutter_web_plugins google_sign_in_platform_interface js]
- http_multi_server 3.2.1 [async]
- http_parser 4.0.2 [collection source_span string_scanner typed_data]
- intl 0.17.0 [clock path]
- io 1.0.3 [meta path string_scanner]
- js 0.6.4
- lints 2.0.1
- logging 1.1.0
- matcher 0.12.12 [stack_trace]
- material_color_utilities 0.1.5
- meta 1.8.0
- mime 1.0.2
- node_preamble 2.0.1
- package_config 2.1.0 [path]
- path 1.8.2
- path_drawing 1.0.1 [vector_math meta path_parsing flutter]
- path_parsing 1.0.1 [vector_math meta]
- petitparser 5.1.0 [meta]
- platform 3.1.0
- plugin_platform_interface 2.1.3 [meta]
- pool 1.5.1 [async stack_trace]
- process 4.2.4 [file path platform]
- pub_semver 2.1.3 [collection meta]
- quiver 3.1.0 [matcher]
- shelf 1.4.0 [async collection http_parser path stack_trace stream_channel]
- shelf_packages_handler 3.0.1 [path shelf shelf_static]
- shelf_static 1.1.1 [convert http_parser mime path shelf]
- shelf_web_socket 1.0.3 [shelf stream_channel web_socket_channel]
- sky_engine 0.0.99
- source_gen 1.2.6 [analyzer async build dart_style glob meta path source_span yaml]
- source_map_stack_trace 2.1.1 [path source_maps stack_trace]
- source_maps 0.10.11 [source_span]
- source_span 1.9.0 [collection path term_glyph]
- stack_trace 1.10.0 [path]
- stream_channel 2.1.0 [async]
- string_scanner 1.1.1 [source_span]
- sync_http 0.3.1
- term_glyph 1.2.1
- test_api 0.4.12 [async boolean_selector collection meta source_span stack_trace stream_channel string_scanner term_glyph matcher]
- test_core 0.4.16 [analyzer async args boolean_selector collection coverage frontend_server_client glob io meta package_config path pool source_map_stack_trace source_maps source_span stack_trace stream_channel vm_service yaml matcher test_api]
- typed_data 1.3.1 [collection]
- vector_math 2.1.2
- vm_service 9.0.0
- watcher 1.0.2 [async path]
- web_socket_channel 2.2.0 [async crypto stream_channel]
- webdriver 3.0.0 [archive matcher path stack_trace sync_http]
- webkit_inspection_protocol 1.2.0 [logging]
- xml 6.1.0 [collection meta petitparser]
- yaml 3.1.1 [collection source_span string_scanner]

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[darshankawar]

Thanks for the report. Seeing the same behavior as reported using the plugin repo.