Session ID is null. The session identified by ... is not known

[smdelacruz]

The problem

Cannot connect to appium server as its always getting an error of "Failed to create session. The session identified by b6c00d36-b450-44b7-b9b5-28362434fd1f is not known". Also tried connecting using Appium Inspector but failed.

Environment

• Appium version (or git revision) that exhibits the issue: 8.1.0
• Appium Desktop:
• Desktop OS/version used to run Appium: Mac Monterey
• Node.js version (unless using Appium.app|exe): 8.5.5
• Npm or Yarn package manager: Maven 11
• Mobile platform/version under test: Android / IOS
• Real device or emulator/simulator: Emulator
• Selenium version: 4.2.0
• testng version: 7.6.1

Details

If necessary, describe the problem you have been experiencing in more detail.

Link to Appium logs

org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure. Build info: version: '4.3.0', revision: 'a4995e2c09*' System info: host: 'ComputerName', ip: '', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '12.3.1', java.version: '17.0.2' Driver info: io.appium.java_client.AppiumDriver Command: [null, newSession {capabilities=[{appium:deviceName=iPhone X, platformName=IOS, appium:automationName=XCUITest, appium:app=ios.app, appium:platformVersion=15.4}], desiredCapabilities=Capabilities {appium:app: ..., appium:automationName: XCUITest, appium:deviceName: iPhone X, appium:platformVersion: 15.4, platformName: IOS}}] Capabilities {}

[KazuCocoa]

Please share the full appium log (as GIST)

[danpgomez]

Wiping all the data from the emulator solved this issue for me. Open the AVD Manager dialog, right click on the virtual device you want to reset data, then choose Wipe Data.