ios Error 6.0.1

[pap5508]

1. clone sample-Groceries
2. tns run ios getting following error

[FBSDisplaySource 1-1] silently connecting <FBSDisplayConfiguration: 0x2805841c0; Main; mode: "375x667@2x 60Hz sRGB SDR">
[FBSDisplaySource 1-1] initialized <FBSDisplayConfiguration: 0x2805841c0; Main; mode: "375x667@2x 60Hz sRGB SDR">
***** Fatal JavaScript exception - application has been terminated. *****
Native stack trace:
1 0x100732048 NativeScript::reportFatalErrorBeforeShutdown(JSC::ExecState*, JSC::Exception*, bool)
2 0x100772028 -[TNSRuntime executeModule:referredBy:]
3 0x1000fc778
4 0x1bb0868e0
JavaScript stack trace:
1 resolve@[native code]
2 loadModule@[native code]
3 loadAndEvaluateModule@[native code]
JavaScript error:
[native code]: JS ERROR Error: Could not find module './'. Computed path '/var/mobile/Containers/Data/Application/DE94ED98-19E9-4745-B878-0FC39C16A452/Library/Application Support/LiveSync/app'.
*** JavaScript call stack:
(
)
*** Terminating app due to uncaught exception 'NativeScript encountered a fatal error: Error: Could not find module './'. Computed path '/var/mobile/Containers/Data/Application/DE94ED98-19E9-4745-B878-0FC39C16A452/Library/Application Support/LiveSync/app'.