Cannot Start on iOS in Mobile recorder

Hello,

I followed the tutorial of iOS Setup but still cannot start the Mobile recorder on iOS.

Thanks,
Kit

java.util.concurrent.ExecutionException: org.openqa.selenium.SessionNotCreatedException: Unable to create a new remote session. Please check the server log for more details. Original error: An unknown server-side error occurred while processing the command. Original error: Unable to start WebDriverAgent session because of xcodebuild failure: An unknown server-side error occurred while processing the command. Original error: Could not proxy command to remote server. Original error: Error: connect ECONNREFUSED 127.0.0.1:57244
Build info: version: ‘unknown’, revision: ‘unknown’, time: ‘unknown’
System info: host: ‘iMac.local’, ip: ‘’, os.name: ‘Mac OS X’, os.arch: ‘x86_64’, os.version: ‘10.16’, java.version: ‘1.8.0_275’
Driver info: driver.version: IOSDriver
remote stacktrace: UnknownError: An unknown server-side error occurred while processing the command. Original error: Unable to start WebDriverAgent session because of xcodebuild failure: An unknown server-side error occurred while processing the command. Original error: Could not proxy command to remote server. Original error: Error: connect ECONNREFUSED 127.0.0.1:57244
at getResponseForW3CError (/usr/local/lib/node_modules/appium/node_modules/appium-base-driver/lib/protocol/errors.js:826:9)
at asyncHandler (/usr/local/lib/node_modules/appium/node_modules/appium-base-driver/lib/protocol/protocol.js:447:37)