Error when running vsock_sample AWS nitro tutorial

I have configured and build the enclave instance as per https://docs.aws.amazon.com/enclaves/latest/user/enclaves-user.pdf . But when I tried to run in it throws the following error

$ nitro-cli run-enclave --eif-path vsock_sample.eif --cpu-count 2 --enclave-cid 6 --memory 512 --debug-mode
Start allocating memory...
Started enclave with enclave-cid: 6, memory: 512 MiB, cpu-ids: [1, 5]
[ E36 ] Enclave boot failure. Such error appears when attempting to receive the `ready` signal from a freshly booted enclave. It arises in several contexts, for instance, when the enclave is booted from an invalid EIF file and the enclave process immediately exits, failing to submit the `ready` signal. In this case, the error backtrace provides detailed information on what specifically failed during the enclave boot process.

For more details, please visit https://docs.aws.amazon.com/enclaves/latest/user/cli-errors.html#E36

If you open a support ticket, please provide the error log found at "/var/log/nitro_enclaves/err2022-04-27T03:41:39.495653281+00:00.log"
Failed connections: 1
[ E39 ] Enclave process connection failure. Such error appears when the enclave manager fails to connect to at least one enclave process for retrieving the description information.

For more details, please visit https://docs.aws.amazon.com/enclaves/latest/user/cli-errors.html#E39

If you open a support ticket, please provide the error log found at "/var/log/nitro_enclaves/err2022-04-27T03:41:39.495889864+00:00.log"

Action: Run Enclave Subactions: Failed to handle all enclave process replies Failed to connect to 1 enclave processes Root error file: src/enclave_proc_comm.rs Root error line: 349 Build commit: not available

How to fix this error ?