bugfix: prevent error 'Error: Failed to execute WebDriver Bidi command "sessionSubscribe" as no Bidi session was established. Make sure you enable it by setting "webSocketUrl: true" in your capabilities and verify that your environment and browser supports it.' being printed to stdout when user deactivated Bidi protocol with "bidiProtocol" : false in Webdriver config.

Author: Norbert Graf

lib/helper/WebDriver.js

@@ -630,7 +630,7 @@ class WebDriver extends Helper {
     this.browser.on('dialog', () => {})
 
     // Check for Bidi, because "sessionSubscribe" is an exclusive Bidi protocol feature. Otherwise, error will be thrown.
-    if (config.capabilities.webSocketUrl) {
+    if (this.browser.capabilities && this.browser.capabilities.webSocketUrl) {
       await this.browser.sessionSubscribe({ events: ['log.entryAdded'] })
     }