Iproxy exited with code 'null'

Unabel to run the script for ios
kindly find the logs below

[XCUITest] WebDriverAgent successfully started after 8649ms
[BaseDriver] Event ‘wdaSessionAttempted’ logged at 1548711073232 (21:31:13 GMT+0000 (GMT))
[XCUITest] Sending createSession command to WDA
[JSONWP Proxy] Matched ‘/session’ to command name ‘createSession’
[JSONWP Proxy] Proxying [POST /session] to [POST http://localhost:8002/session] with body: {“desiredCapabilities”:{“bundleId”:“com.vanquis.evanquis.dev”,“arguments”:[],“environment”:{},“shouldWaitForQuiescence”:true,“shouldUseTestManagerForVisibilityDetection”:false,“maxTypingFrequency”:60,“shouldUseSingletonTestManager”:true}}
[JSONWP Proxy] Got response with status 200: {“value”:{“sessionId”:“90251A7E-6DE6-4278-BE59-8CBFE4A97F74”,“capabilities”:{“device”:“iphone”,“browserName”:“Vanquis”,“sdkVersion”:“11.4”,“CFBundleIdentifier”:“com.vanquis.evanquis.dev”}},“sessionId”:“90251A7E-6DE6-4278-BE59-8CBFE4A97F74”,“status”:0}
[BaseDriver] Event ‘wdaSessionStarted’ logged at 1548711076158 (21:31:16 GMT+0000 (GMT))
[BaseDriver] Event ‘wdaStarted’ logged at 1548711076159 (21:31:16 GMT+0000 (GMT))
[XCUITest] Skipping setting of the initial display orientation. Set the “orientation” capability to either “LANDSCAPE” or “PORTRAIT”, if this is an undesired behavior.
[BaseDriver] Event ‘orientationSet’ logged at 1548711076159 (21:31:16 GMT+0000 (GMT))
[Appium] New XCUITestDriver session created successfully, session f1a2ae52-677c-4f06-8ee0-13fcf1ded28e added to master session list
[BaseDriver] Event ‘newSessionStarted’ logged at 1548711076160 (21:31:16 GMT+0000 (GMT))
[MJSONWP (f1a2ae52)] Cached the protocol value ‘MJSONWP’ for the new session f1a2ae52-677c-4f06-8ee0-13fcf1ded28e
[MJSONWP (f1a2ae52)] Responding to client with driver.createSession() result: {“webStorageEnabled”:false,“locationContextEnabled”:false,“browserName”:"",“platform”:“MAC”,“javascriptEnabled”:true,“databaseEnabled”:false,“takesScreenshot”:true,“networkConnectionEnabled”:false,“platformName”:“iOS”,“platformVersion”:“11.4”,“deviceName”:“iPhone”,“app”:"/Users/jebran/Downloads/Vanquis.Mobile.Platform.iOS.ipa",“udid”:“0468fc8c507ea349c1aa8196c6db39fdabcf9d8f”,“xcodeOrgId”:“4U93977UW9”,“xcodeSigningId”:“iPhone Developer”,“newCommandTimeout”:600,“useNewWDA”:true,“bundleId”:“com.vanquis.evanquis.dev”,“wdaLocalPort”:8002}
[HTTP] <-- POST /wd/hub/session 200 24589 ms - 612
[HTTP]
[XCUITest] Connection to WDA timed out
[iProxy] recv failed: Operation not permitted
[HTTP] --> DELETE /wd/hub/session/f1a2ae52-677c-4f06-8ee0-13fcf1ded28e
[HTTP] {}
[MJSONWP (f1a2ae52)] Calling AppiumDriver.deleteSession() with args: [“f1a2ae52-677c-4f06-8ee0-13fcf1ded28e”]
[BaseDriver] Event ‘quitSessionRequested’ logged at 1548711126286 (21:32:06 GMT+0000 (GMT))
[Appium] Removing session f1a2ae52-677c-4f06-8ee0-13fcf1ded28e from our master session list
[JSONWP Proxy] Matched ‘/session/f1a2ae52-677c-4f06-8ee0-13fcf1ded28e’ to command name ‘deleteSession’
[JSONWP Proxy] Proxying [DELETE /session/f1a2ae52-677c-4f06-8ee0-13fcf1ded28e] to [DELETE http://localhost:8002/session/90251A7E-6DE6-4278-BE59-8CBFE4A97F74] with no body
[JSONWP Proxy] Got response with status 200: “{\n “value” : {\n\n },\n “sessionId” : “2B92CC14-A74E-4171-9191-756B49686A1D”,\n “status” : 0\n}”
[XCUITest] Shutting down sub-processes
[XCUITest] Shutting down iproxy process (pid 22051)
[XCUITest] Connection to WDA timed out
[iProxy] recv failed: Operation not permitted
[XCUITest] iproxy exited with code ‘null’
[XCUITest] Shutting down xcodebuild process (pid 22052)
[XCUITest] xcodebuild exited with code ‘null’ and signal ‘SIGTERM’
[XCUITest] Not clearing log files. Use clearSystemFiles capability to turn on.
[iOSLog] Stopping iOS log capture
[BaseDriver] Event ‘quitSessionFinished’ logged at 1548711127414 (21:32:07 GMT+0000 (GMT))
[MJSONWP (f1a2ae52)] Received response: null
[MJSONWP (f1a2ae52)] But deleting session, so not returning
[MJSONWP (f1a2ae52)] Responding to client with driver.deleteSession() result: null
[HTTP] <-- DELETE /wd/hub/session/f1a2ae52-677c-4f06-8ee0-13fcf1ded28e 200 1129 ms - 76
[HTTP]