Remote attestation not possible, request guidance

I have installed the sgx driver, SDK and PWS on the ubuntu20.04 system according to the guide, **and the local enclave instance can proceed smoothly.** However, **the remote authentication in SampleCode cannot be completed,** and the following error occurs.

wynn@wynn-ThinkCentre-E97:**/opt/intel/sgxsdk/SampleCode/RemoteAttestation$ sudo ./app**

First round, we will try ECDSA algorithm.

Call sgx_get_extended_epid_group_id success.
MSG0 body generated -
4 bytes:
{
0x0, 0x0, 0x0, 0x0
}

Sending msg0 to remote attestation service provider.

Sent MSG0 to remote attestation service.

Call sgx_select_att_key_id success.
Call sgx_create_enclave success.
Call enclave_init_ra success.
**Error, call sgx_ra_get_msg1_ex fail [main].**
Call enclave_ra_close success.
Second round, we will try EPID algorithm.

Call sgx_get_extended_epid_group_id success.
MSG0 body generated -
4 bytes:
{
0x0, 0x0, 0x0, 0x0
}

Sending msg0 to remote attestation service provider.

Sent MSG0 to remote attestation service.

Call sgx_select_att_key_id success.
Call sgx_create_enclave success.
Call enclave_init_ra success.
**Error, call sgx_ra_get_msg1_ex fail [main].**
Call enclave_ra_close success.
Enter a character before exit ...

**aesmd.service Display the following information：**
● aesmd.service - Intel(R) Architectural Enclave Service Manager
Loaded: loaded (/lib/systemd/system/aesmd.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2022-04-29 11:34:18 CST; 4h 39min ago
Main PID: 97154 (aesm_service)
Tasks: 4 (limit: 18702)
Memory: 2.7M
CGroup: /system.slice/aesmd.service
└─97154 /opt/intel/sgxpsw/aesm/aesm_service

4月 29 11:38:32 wynn-ThinkCentre-E97 aesm_service[97154]: [ADMIN]EPID Provisioning failed
4月 29 16:13:29 wynn-ThinkCentre-E97 aesm_service[97154]: [QCNL] Try remote service...
4月 29 16:13:29 wynn-ThinkCentre-E97 aesm_service[97154]: [QCNL] Request URL https://localhost:8081/sgx/certification/v3/pckcert?qeid=55C424A06FD1E8127BCD65D9B88AD98E&encrypted_ppid=547396146EFB350309>
**4月 29 16:13:29 wynn-ThinkCentre-E97 aesm_service[97154]: [QPL] Failed to get quote config. Error code is 0xb00d
4月 29 16:13:29 wynn-ThinkCentre-E97 aesm_service[97154]: [get_platform_quote_cert_data ../qe_logic.cpp:377] Error returned from the p_sgx_get_quote_config API. 0xe046**
4月 29 16:13:32 wynn-ThinkCentre-E97 aesm_service[97154]: [ADMIN]EPID Provisioning initiated
4月 29 16:13:36 wynn-ThinkCentre-E97 aesm_service[97154]: The Request ID is 52c1925d84e14d0e9e0399dddd0fe9ac
4月 29 16:13:37 wynn-ThinkCentre-E97 aesm_service[97154]: The Request ID is c1e762de64a34d47bd526843e4897fd5
4月 29 16:13:37 wynn-ThinkCentre-E97 aesm_service[97154]: [ADMIN]EPID Provisioning protocol error reported by Backend (9)
**4月 29 16:13:37 wynn-ThinkCentre-E97 aesm_service[97154]: [ADMIN]EPID Provisioning failed**
~
**Please professional and experienced friends to answer my questions**
**sincerely for reply!!!**