[🐛 Bug]: OpenQA.Selenium.WebDriverException : Unexpected error creating WebSocket DevTools session. ----> System.NullReferenceException : Object reference not set to an instance of an object. #14483
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MJB222398
added
I-defect
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@MJB222398, thank you for creating this issue. We will troubleshoot it as soon as we can. Info for maintainersTriage this issue by using labels.
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Hi @nvborisenko is there any update on this? I cannot upgrade to 4.24 as it stands |
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I see the following even locally I think your options here are:
The first preview is available in Selenium v4.25, something like the following: var options = new FirefoxOptions() { UseWebSocketUrl = true };
using var driver = new FirefoxDriver(options);
var bidi = await driver.AsBiDiAsync();
await bidi.Log.OnEntryAddedAsync(e => Console.WriteLine(e));
driver.Url = "https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html";
driver.FindElement(By.Id("consoleLog")).Click();Please try it out and leave feedback. |
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@nvborisenko Would like to do the BiDi upgrade, wasn't aware it was ready enough yet. Trying out the above for FF is working well on first glance. However for Edge and Chrome it is not: |
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Like this one: #14299 |
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I adjusted code slightly to avoid |
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@nvborisenko Thanks you're right thats the issue. Yes definitely makes sense to guard against the NRE, thanks |
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This issue has been automatically locked since there has not been any recent activity since it was closed. Please open a new issue for related bugs. |
What happened?
This exception was thrown when setting up my Firefox RemoteWebDriver:
How can we reproduce the issue?
Relevant log output
Driver logs: 2024-09-10 13:02:30.373 DEBUG HttpCommandExecutor: Executing command: []: newSession {"capabilities":{"firstMatch":[{"browserName":"firefox","moz:firefoxOptions":{"args":["-profile","home/seluser/.mozilla/firefox/seluser_profile"],"prefs":{"remote.active-protocols":3}},"moz:debuggerAddress":true}]}} 2024-09-10 13:02:30.373 TRACE HttpCommandExecutor: >> Method: POST, RequestUri: 'http://localhost:4444/wd/hub/session', Version: 1.1, Content: System.Net.Http.ByteArrayContent, Headers: { Accept: application/json; charset=utf-8 User-Agent: selenium/4.24.0 User-Agent: (.net windows) Content-Type: application/json; charset=utf-8 Content-Length: 215 } {"capabilities":{"firstMatch":[{"browserName":"firefox","moz:firefoxOptions":{"args":["-profile","home/seluser/.mozilla/firefox/seluser_profile"],"prefs":{"remote.active-protocols":3}},"moz:debuggerAddress":true}]}} 2024-09-10 13:02:32.396 TRACE HttpCommandExecutor: << StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.HttpConnectionResponseContent, Headers: { Cache-Control: no-cache Content-Length: 1816 Content-Type: application/json; charset=utf-8 } 2024-09-10 13:02:32.396 DEBUG HttpCommandExecutor: Response: (ece3e5ae-5545-4f1d-b152-fac12dd8e0b9 Success: System.Collections.Generic.Dictionary`2[System.String,System.Object]) 2024-09-10 13:02:32.396 DEBUG HttpCommandExecutor: Executing command: [ece3e5ae-5545-4f1d-b152-fac12dd8e0b9]: maximizeWindow {} 2024-09-10 13:02:32.396 TRACE HttpCommandExecutor: >> Method: POST, RequestUri: 'http://localhost:4444/wd/hub/session/ece3e5ae-5545-4f1d-b152-fac12dd8e0b9/window/maximize', Version: 1.1, Content: System.Net.Http.ByteArrayContent, Headers: { Accept: application/json; charset=utf-8 User-Agent: selenium/4.24.0 User-Agent: (.net windows) Content-Type: application/json; charset=utf-8 Content-Length: 2 } {} 2024-09-10 13:02:32.700 TRACE HttpCommandExecutor: << StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.HttpConnectionResponseContent, Headers: { Cache-Control: no-cache Content-Length: 50 Content-Type: application/json; charset=utf-8 } 2024-09-10 13:02:32.700 DEBUG HttpCommandExecutor: Response: ( Success: System.Collections.Generic.Dictionary`2[System.String,System.Object]) Logs from Docker container: 2024-09-10 12:01:55,443 INFO Included extra file "/etc/supervisor/conf.d/firefox-cleanup.conf" during parsing 2024-09-10 12:01:55,444 INFO Included extra file "/etc/supervisor/conf.d/selenium.conf" during parsing 2024-09-10 12:01:55,446 INFO RPC interface 'supervisor' initialized 2024-09-10 12:01:55,446 INFO supervisord started with pid 8 2024-09-10 12:01:56,448 INFO spawned: 'xvfb' with pid 1189 2024-09-10 12:01:56,449 INFO spawned: 'vnc' with pid 1190 2024-09-10 12:01:56,450 INFO spawned: 'novnc' with pid 1191 2024-09-10 12:01:56,451 INFO spawned: 'selenium-node' with pid 1192 2024-09-10 12:01:56,462 INFO success: selenium-node entered RUNNING state, process has stayed up for > than 0 seconds (startsecs) Appending Selenium options: --log-level CONFIG Appending Selenium option: --session-timeout 180 Appending Selenium option: --heartbeat-period 30 Selenium option: --log-level already set in env variable SE_OPTS. Ignore new option: --log-level INFO Appending Selenium option: --http-logs false Appending Selenium option: --structured-logs false Generating Selenium Config Configuring server... Setting up SE_NODE_HOST... Setting up SE_NODE_PORT... Tracing is enabled Classpath will be enriched with these external jars : --ext /external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-exporter-otlp/1.40.0/opentelemetry-exporter-otlp-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/grpc/grpc-netty/1.65.1/grpc-netty-1.65.1.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-codec-http/4.1.111.Final/netty-codec-http-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-sdk-trace/1.40.0/opentelemetry-sdk-trace-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-sdk-metrics/1.40.0/opentelemetry-sdk-metrics-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-sdk-logs/1.40.0/opentelemetry-sdk-logs-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-exporter-otlp-common/1.40.0/opentelemetry-exporter-otlp-common-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-exporter-sender-okhttp/1.40.0/opentelemetry-exporter-sender-okhttp-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-sdk-extension-autoconfigure-spi/1.40.0/opentelemetry-sdk-extension-autoconfigure-spi-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/grpc/grpc-api/1.65.1/grpc-api-1.65.1.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-codec-http2/4.1.100.Final/netty-codec-http2-4.1.100.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/grpc/grpc-core/1.65.1/grpc-core-1.65.1.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-handler-proxy/4.1.100.Final/netty-handler-proxy-4.1.100.Final.jar:/external_jars/https/repo1.maven.org/maven2/com/google/guava/guava/32.1.3-android/guava-32.1.3-android.jar:/external_jars/https/repo1.maven.org/maven2/com/google/errorprone/error_prone_annotations/2.23.0/error_prone_annotations-2.23.0.jar:/external_jars/https/repo1.maven.org/maven2/io/perfmark/perfmark-api/0.26.0/perfmark-api-0.26.0.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-transport-native-unix-common/4.1.111.Final/netty-transport-native-unix-common-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/grpc/grpc-util/1.65.1/grpc-util-1.65.1.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-common/4.1.111.Final/netty-common-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-buffer/4.1.111.Final/netty-buffer-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-transport/4.1.111.Final/netty-transport-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-codec/4.1.111.Final/netty-codec-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-handler/4.1.111.Final/netty-handler-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-api/1.40.0/opentelemetry-api-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-sdk-common/1.40.0/opentelemetry-sdk-common-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-api-incubator/1.40.0-alpha/opentelemetry-api-incubator-1.40.0-alpha.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-exporter-common/1.40.0/opentelemetry-exporter-common-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/com/squareup/okhttp3/okhttp/4.12.0/okhttp-4.12.0.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-sdk/1.40.0/opentelemetry-sdk-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar:/external_jars/https/repo1.maven.org/maven2/com/google/code/gson/gson/2.10.1/gson-2.10.1.jar:/external_jars/https/repo1.maven.org/maven2/com/google/android/annotations/4.1.1.4/annotations-4.1.1.4.jar:/external_jars/https/repo1.maven.org/maven2/org/codehaus/mojo/animal-sniffer-annotations/1.23/animal-sniffer-annotations-1.23.jar:/external_jars/https/repo1.maven.org/maven2/io/grpc/grpc-context/1.65.1/grpc-context-1.65.1.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-codec-socks/4.1.100.Final/netty-codec-socks-4.1.100.Final.jar:/external_jars/https/repo1.maven.org/maven2/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar:/external_jars/https/repo1.maven.org/maven2/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/external_jars/https/repo1.maven.org/maven2/org/checkerframework/checker-qual/3.37.0/checker-qual-3.37.0.jar:/external_jars/https/repo1.maven.org/maven2/com/google/j2objc/j2objc-annotations/2.8/j2objc-annotations-2.8.jar:/external_jars/https/repo1.maven.org/maven2/io/netty/netty-resolver/4.1.111.Final/netty-resolver-4.1.111.Final.jar:/external_jars/https/repo1.maven.org/maven2/io/opentelemetry/opentelemetry-context/1.40.0/opentelemetry-context-1.40.0.jar:/external_jars/https/repo1.maven.org/maven2/com/squareup/okio/okio/3.6.0/okio-3.6.0.jar:/external_jars/https/repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.10/kotlin-stdlib-jdk8-1.9.10.jar:/external_jars/https/repo1.maven.org/maven2/com/squareup/okio/okio-jvm/3.6.0/okio-jvm-3.6.0.jar:/external_jars/https/repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-stdlib/1.9.10/kotlin-stdlib-1.9.10.jar:/external_jars/https/repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.10/kotlin-stdlib-jdk7-1.9.10.jar:/external_jars/https/repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.10/kotlin-stdlib-common-1.9.10.jar:/external_jars/https/repo1.maven.org/maven2/org/jetbrains/annotations/13.0/annotations-13.0.jar List arguments for OpenTelemetry: -Dotel.resource.attributes=service.name=selenium-node-firefox -Dotel.traces.exporter=otlp -Dotel.java.global-autoconfigure.enabled=true Selenium Grid Node configuration: [events] publish = "tcp://selenium-hub:4442" subscribe = "tcp://selenium-hub:4443" [node] grid-url = "http://localhost:4444" session-timeout = "180" override-max-sessions = false detect-drivers = false drain-after-session-count = 0 max-sessions = 1 [[node.driver-configuration]] display-name = "firefox" stereotype = '{"browserName": "firefox", "browserVersion": "130.0", "platformName": "Linux", "moz:firefoxOptions": {"binary": "/usr/bin/firefox"}, "se:containerName": ""}' max-sessions = 1 Starting Selenium Grid Node... 12:01:57.169 INFO [LoggingOptions.configureLogEncoding] - Using the system default encoding 12:01:57.179 INFO [OpenTelemetryTracer.createTracer] - Using OpenTelemetry for tracing 12:01:57.403 INFO [UnboundZmqEventBus.<init>] - Connecting to tcp://selenium-hub:4442 and tcp://selenium-hub:4443 12:01:57.450 INFO [UnboundZmqEventBus.<init>] - Sockets created 2024-09-10 12:01:57,450 INFO success: xvfb entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 2024-09-10 12:01:57,450 INFO success: vnc entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 2024-09-10 12:01:57,450 INFO success: novnc entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 12:01:58.451 INFO [UnboundZmqEventBus.<init>] - Event bus ready 12:01:58.511 INFO [NodeServer.createHandlers] - Reporting self as: http://172.18.0.4:5555 12:01:58.527 INFO [NodeOptions.getSessionFactories] - Detected 20 available processors 12:01:58.555 INFO [NodeOptions.report] - Adding firefox for {"browserName": "firefox","browserVersion": "130.0","moz:firefoxOptions": {"binary": "\u002fusr\u002fbin\u002ffirefox"},"platformName": "linux","se:containerName": "","se:noVncPort": 7900,"se:vncEnabled": true} 1 times 12:01:58.568 INFO [Node.<init>] - Binding additional locator mechanisms: relative 12:01:58.685 INFO [NodeServer$1.start] - Starting registration process for Node http://172.18.0.4:5555 12:01:58.687 INFO [NodeServer.execute] - Started Selenium node 4.24.0 (revision 748ffc9bc3): http://172.18.0.4:5555 12:01:58.698 INFO [NodeServer$1.lambda$start$1] - Sending registration event... 12:01:58.785 INFO [NodeServer.lambda$createHandlers$2] - Node has been added 12:02:02.375 WARN [ThrottlingLogger.doLog] - Failed to export spans. Server responded with gRPC status code 2. Error message: Failed to connect to localhost/[0:0:0:0:0:0:0:1]:4317 12:02:32.379 WARN [ThrottlingLogger.doLog] - Failed to export spans. Server responded with gRPC status code 2. Error message: Failed to connect to localhost/[0:0:0:0:0:0:0:1]:4317 12:02:32.385 INFO [LocalNode.newSession] - Session created by the Node. Id: ece3e5ae-5545-4f1d-b152-fac12dd8e0b9, Caps: Capabilities {acceptInsecureCerts: false, browserName: firefox, browserVersion: 130.0, moz:accessibilityChecks: false, moz:buildID: 20240829075237, moz:debuggerAddress: 127.0.0.1:23450, moz:firefoxOptions: {args: [-profile, home/seluser/.mozilla/firef...], prefs: {remote.active-protocols: 3}}, moz:geckodriverVersion: 0.35.0, moz:headless: false, moz:platformVersion: 5.15.146.1-microsoft-standa..., moz:processID: 1662, moz:profile: /home/seluser/.mozilla/fire..., moz:shutdownTimeout: 60000, moz:webdriverClick: true, moz:windowless: false, pageLoadStrategy: normal, platformName: linux, proxy: Proxy(), se:bidiEnabled: false, se:cdp: ws://localhost:4444/session..., se:cdpVersion: 85.0, se:containerName: , se:noVncPort: 7900, se:vnc: ws://localhost:4444/session..., se:vncEnabled: true, se:vncLocalAddress: ws://172.18.0.4:7900, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, userAgent: Mozilla/5.0 (X11; Linux x86...} 12:02:32.726 INFO [ProxyNodeWebsockets.createWsEndPoint] - Establishing connection to ws://127.0.0.1:23450/devtools/browser/b8e7f9ae-d105-46cb-b830-d8c57e83f515 12:02:37.381 WARN [ThrottlingLogger.doLog] - Failed to export spans. Server responded with gRPC status code 2. Error message: Failed to connect to localhost/[0:0:0:0:0:0:0:1]:4317Operating System
Windows 10
Selenium version
4.24
What are the browser(s) and version(s) where you see this issue?
Firefox
What are the browser driver(s) and version(s) where you see this issue?
Firefox
Are you using Selenium Grid?
Yes 4.24.0-20240907
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