Error itms-90296

Been a while since I built for the Mac desktop but after trying to send to app store through transporter I get this:

ERROR ITMS-90296: “App sandbox not enabled. The following executables must include the “com.apple.security.app-sandbox” entitlement with a Boolean value of true in the entitlements property list: [( “com.xxxx.xxxx.pkg/Payload/xxxx.app/Contents/MacOS/xxxx” )] Refer to App Sandbox page at https://developer.apple.com/devcenter/mac/app-sandbox/ for more information on sandboxing your app.”

Below is what I use for the build.settings not sure if there needs to be anything new added, any help much appreciated.

settings = {

window = {

defaultMode = “fullscreen”,

enableCloseButton = true,

enableMinimizeButton = true,

enableMaximizeButton = true,

defaultViewWidth = 960,

defaultViewHeight = 540,

minViewWidth = 960,

minViewHeight = 540,

suspendWhenMinimized = true,

–resizable = true,

showWindowTitle = true,

titleText = {default=“xxxx”},

},

win32 = 

{

singleInstance = true,

},

osx =

{

plist =

{

LSMinimumSystemVersion = ‘10.11.0’,

NSHumanReadableCopyright = “Copyright © 2013-2020 xxxx”

},

},

plugins = {

        [‘plugin.mousecursor’] = {publisherId = ‘com.spiralcodestudio’}

    }

}