An unknown server-side error occurred while processing the command. Original error: Could not extract Info.plist from application: Plist file doesn't exist

I am trying to run an automated js script in sauceLabs with Appium but I am not able to run it getting the following error from the logs:

An unknown server-side error occurred while processing the command. Original error: Could not extract Info.plist from application: Plist file doesn’t exist ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app/Info.plist’.

Below is the appium server log file:

2019-07-29 07:45:56:983 - [Appium] Welcome to Appium v1.13.0
2019-07-29 07:45:56:985 - [Appium] Non-default server args:
2019-07-29 07:45:56:986 - [Appium] address: 127.0.0.1
2019-07-29 07:45:56:986 - [Appium] port: 4443
2019-07-29 07:45:56:986 - [Appium] callbackAddress: 127.0.0.1
2019-07-29 07:45:56:987 - [Appium] logTimestamp: true
2019-07-29 07:45:56:987 - [Appium] logNoColors: true
2019-07-29 07:45:56:987 - [Appium] defaultCapabilities: {
2019-07-29 07:45:56:987 - [Appium] usePrebuiltWDA: true
2019-07-29 07:45:56:987 - [Appium] orientation: PORTRAIT
2019-07-29 07:45:56:987 - [Appium] launchTimeout: 180000
2019-07-29 07:45:56:987 - [Appium] showIOSLog: true
2019-07-29 07:45:56:987 - [Appium] noReset: true
2019-07-29 07:45:56:988 - [Appium] eventTimings: true
2019-07-29 07:45:56:988 - [Appium] backendRetries: 4
2019-07-29 07:45:56:988 - [Appium] derivedDataPath: /Volumes/Sauce/wda/wda-v1.13.0-xcode10.2/WebdriverAgent/DerivedData/WebdriverAgent
2019-07-29 07:45:56:988 - [Appium] bootstrapPath: /Volumes/Sauce/wda/wda-v1.13.0-xcode10.2/WebdriverAgent
2019-07-29 07:45:56:988 - [Appium] maxTypingFrequency: 8
2019-07-29 07:45:56:988 - [Appium] newCommandTimeout: 0
2019-07-29 07:45:56:988 - [Appium] preventWDAAttachments: true
2019-07-29 07:45:56:989 - [Appium] app: /var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app
2019-07-29 07:45:56:989 - [Appium] keepKeyChains: true
2019-07-29 07:45:56:989 - [Appium] }
2019-07-29 07:45:56:989 - [Appium] relaxedSecurityEnabled: true
2019-07-29 07:45:56:989 - [Appium] Default capabilities, which will be added to each request unless overridden by desired capabilities:
2019-07-29 07:45:56:990 - [Appium] usePrebuiltWDA: true
2019-07-29 07:45:56:990 - [Appium] orientation: PORTRAIT
2019-07-29 07:45:56:990 - [Appium] launchTimeout: 180000
2019-07-29 07:45:56:990 - [Appium] showIOSLog: true
2019-07-29 07:45:56:990 - [Appium] noReset: true
2019-07-29 07:45:56:990 - [Appium] eventTimings: true
2019-07-29 07:45:56:991 - [Appium] backendRetries: 4
2019-07-29 07:45:56:991 - [Appium] derivedDataPath: /Volumes/Sauce/wda/wda-v1.13.0-xcode10.2/WebdriverAgent/DerivedData/WebdriverAgent
2019-07-29 07:45:56:991 - [Appium] bootstrapPath: /Volumes/Sauce/wda/wda-v1.13.0-xcode10.2/WebdriverAgent
2019-07-29 07:45:56:991 - [Appium] maxTypingFrequency: 8
2019-07-29 07:45:56:991 - [Appium] newCommandTimeout: 0
2019-07-29 07:45:56:991 - [Appium] preventWDAAttachments: true
2019-07-29 07:45:56:992 - [Appium] app: /var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app
2019-07-29 07:45:56:992 - [Appium] keepKeyChains: true
2019-07-29 07:45:57:053 - [Appium] Appium REST http interface listener started on 127.0.0.1:4443
2019-07-29 07:45:57:083 - [HTTP] --> GET /wd/hub/status
2019-07-29 07:45:57:083 - [HTTP] {}
2019-07-29 07:45:57:087 - [debug] [GENERIC] Calling AppiumDriver.getStatus() with args: []
2019-07-29 07:45:57:088 - [debug] [GENERIC] Responding to client with driver.getStatus() result: {“build”:{“version”:“1.13.0”}}
2019-07-29 07:45:57:093 - [HTTP] <-- GET /wd/hub/status 200 8 ms - 68
2019-07-29 07:45:57:094 - [HTTP]
2019-07-29 07:45:57:208 - [HTTP] --> POST /wd/hub/session
2019-07-29 07:45:57:208 - [HTTP] {“desiredCapabilities”:{“deviceName”:“iPhone X”,“platformName”:“iOS”,“automationName”:“XCUITest”,“webdriver.remote.quietExceptions”:false,“waitForAppScript”:“true”,“platformVersion”:“12.2”,“autoAcceptAlerts”:“True”}}
2019-07-29 07:45:57:209 - [debug] [MJSONWP] Calling AppiumDriver.createSession() with args: [{“deviceName”:“iPhone X”,“platformName”:“iOS”,“automationName”:“XCUITest”,“webdriver.remote.quietExceptions”:false,“waitForAppScript”:“true”,“platformVersion”:“12.2”,“autoAcceptAlerts”:“True”},null,null]
2019-07-29 07:45:57:209 - [debug] [BaseDriver] Event ‘newSessionRequested’ logged at 1564386357209 (07:45:57 GMT+0000 (GMT))
2019-07-29 07:45:57:649 - [Appium] Appium v1.13.0 creating new XCUITestDriver (v2.114.0) session
2019-07-29 07:45:57:649 - [Appium] Capabilities:
2019-07-29 07:45:57:649 - [Appium] usePrebuiltWDA: true
2019-07-29 07:45:57:650 - [Appium] orientation: PORTRAIT
2019-07-29 07:45:57:650 - [Appium] launchTimeout: 180000
2019-07-29 07:45:57:650 - [Appium] showIOSLog: true
2019-07-29 07:45:57:650 - [Appium] noReset: true
2019-07-29 07:45:57:650 - [Appium] eventTimings: true
2019-07-29 07:45:57:650 - [Appium] backendRetries: 4
2019-07-29 07:45:57:650 - [Appium] derivedDataPath: /Volumes/Sauce/wda/wda-v1.13.0-xcode10.2/WebdriverAgent/DerivedData/WebdriverAgent
2019-07-29 07:45:57:651 - [Appium] bootstrapPath: /Volumes/Sauce/wda/wda-v1.13.0-xcode10.2/WebdriverAgent
2019-07-29 07:45:57:651 - [Appium] maxTypingFrequency: 8
2019-07-29 07:45:57:651 - [Appium] newCommandTimeout: 0
2019-07-29 07:45:57:651 - [Appium] preventWDAAttachments: true
2019-07-29 07:45:57:651 - [Appium] app: /var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app
2019-07-29 07:45:57:652 - [Appium] keepKeyChains: true
2019-07-29 07:45:57:652 - [Appium] deviceName: iPhone X
2019-07-29 07:45:57:652 - [Appium] platformName: iOS
2019-07-29 07:45:57:652 - [Appium] automationName: XCUITest
2019-07-29 07:45:57:652 - [Appium] webdriver.remote.quietExceptions: false
2019-07-29 07:45:57:652 - [Appium] waitForAppScript: true
2019-07-29 07:45:57:652 - [Appium] platformVersion: 12.2
2019-07-29 07:45:57:652 - [Appium] autoAcceptAlerts: True
2019-07-29 07:45:57:654 - [Appium] Applying relaxed security to ‘XCUITestDriver’ as per server command line argument
2019-07-29 07:45:57:655 - [debug] [BaseDriver] Creating session with MJSONWP desired capabilities: {“usePrebuiltWDA”:true,"ori…
2019-07-29 07:45:57:656 - [BaseDriver] Capability ‘autoAcceptAlerts’ changed from string to boolean. This may cause unexpected behavior
2019-07-29 07:45:57:661 - [BaseDriver] The following capabilities were provided, but are not recognized by appium: backendRetries, preventWDAAttachments, webdriver.remote.quietExceptions.
2019-07-29 07:45:57:663 - [BaseDriver] Session created with session id: 518c5154-0047-4238-bc38-15cef5a2b645
2019-07-29 07:45:57:693 - [debug] [XCUITest] Current user: ‘chef’
2019-07-29 07:45:58:295 - [iOSSim] Constructing iOS simulator for Xcode version 10.2 with udid ‘137C0E58-4A10-4371-98F3-3CC46F99E425’
2019-07-29 07:45:58:296 - [XCUITest] Determining device to run tests on: udid: ‘137C0E58-4A10-4371-98F3-3CC46F99E425’, real device: false
2019-07-29 07:45:59:502 - [XCUITest] iOS SDK Version set to ‘12.2’
2019-07-29 07:45:59:502 - [debug] [BaseDriver] Event ‘xcodeDetailsRetrieved’ logged at 1564386359502 (07:45:59 GMT+0000 (GMT))
2019-07-29 07:45:59:505 - [BaseDriver] Using local app ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app’
2019-07-29 07:45:59:507 - [debug] [BaseDriver] Event ‘appConfigured’ logged at 1564386359507 (07:45:59 GMT+0000 (GMT))
2019-07-29 07:45:59:507 - [debug] [XCUITest] Checking whether app ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app’ is actually present on file system
2019-07-29 07:45:59:508 - [debug] [XCUITest] App is present
2019-07-29 07:45:59:518 - [Support] Error: Plist file doesn’t exist: ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app/Info.plist’
2019-07-29 07:45:59:518 - [Support] at Object.wrappedLogger.errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-support/lib/logging.js:78:13)
2019-07-29 07:45:59:518 - [Support] at Object.errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-support/lib/plist.js:22:11)
2019-07-29 07:45:59:518 - [Support] at Generator.next ()
2019-07-29 07:45:59:519 - [Support] at asyncGeneratorStep (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/@babel/runtime/helpers/asyncToGenerator.js:3:24)
2019-07-29 07:45:59:519 - [Support] at _next (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/@babel/runtime/helpers/asyncToGenerator.js:25:9)
2019-07-29 07:45:59:519 - [Support] at
2019-07-29 07:45:59:523 - [iOS] Error: Could not extract Info.plist from application: Plist file doesn’t exist: ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app/Info.plist’
2019-07-29 07:45:59:523 - [iOS] at Object.wrappedLogger.errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-support/lib/logging.js:78:13)
2019-07-29 07:45:59:523 - [iOS] at errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-ios-driver/lib/app-utils.js:14:9)
2019-07-29 07:45:59:523 - [iOS] at
2019-07-29 07:45:59:524 - [XCUITest] Error: Could not extract Info.plist from application: Plist file doesn’t exist: ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app/Info.plist’
2019-07-29 07:45:59:524 - [XCUITest] at Object.wrappedLogger.errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-support/lib/logging.js:78:13)
2019-07-29 07:45:59:524 - [XCUITest] at errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-ios-driver/lib/app-utils.js:14:9)
2019-07-29 07:45:59:524 - [XCUITest] at
2019-07-29 07:45:59:526 - [debug] [BaseDriver] Event ‘newSessionStarted’ logged at 1564386359526 (07:45:59 GMT+0000 (GMT))
2019-07-29 07:45:59:526 - [debug] [MJSONWP] Encountered internal error running command: Error: Could not extract Info.plist from application: Plist file doesn’t exist: ‘/var/folders/d2/qw7q16_j7yb7yk5r6b8sl0n40000kr/T/tmplytVo4/ROVRsimulator.app/Info.plist’
2019-07-29 07:45:59:527 - [debug] [MJSONWP] at Object.wrappedLogger.errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-support/lib/logging.js:78:13)
2019-07-29 07:45:59:527 - [debug] [MJSONWP] at errorAndThrow (/Volumes/Sauce/selenium/appium-v1.13.0/node_modules/appium-ios-driver/lib/app-utils.js:14:9)
2019-07-29 07:45:59:527 - [debug] [MJSONWP] at
2019-07-29 07:45:59:571 - [HTTP] <-- POST /wd/hub/session 500 2362 ms - 299
2019-07-29 07:45:59:571 - [HTTP]

I am using a zipped .app file for simulators as I read here on the forum, and checked to see if the file Info.plist is present in the folder, and it is. Can someone help me of why this might happen, please?

ran into the same problem, restart appium server resolve the issue for me