Can't sync yet, please help, post some log

dear all, i can’t sync yet since 3 days ago, got these log, please help.

2021-05-05T13:35:27.610 full_node chia.rpc.rpc_server : WARNING Error while handling message: Traceback (most recent call last):
File “chia\rpc\rpc_server.py”, line 212, in safe_handle
File “chia\rpc\rpc_server.py”, line 200, in ws_api
File “chia\rpc\rpc_server.py”, line 161, in open_connection
ValueError: Start client failed, or server is not set

2021-05-05T13:38:47.585 full_node full_node_server : ERROR Exception , exception Stack: Traceback (most recent call last):
File “chia\server\server.py”, line 356, in start_client
File “aiohttp\client.py”, line 763, in _ws_connect
File “aiohttp\client.py”, line 521, in _request
File “aiohttp\connector.py”, line 535, in connect
File “aiohttp\connector.py”, line 892, in _create_connection
File “aiohttp\connector.py”, line 1032, in _create_direct_connection
File “aiohttp\connector.py”, line 969, in _wrap_create_connection
File “asyncio\base_events.py”, line 949, in create_connection
File “asyncio\selector_events.py”, line 473, in sock_connect
concurrent.futures._base.CancelledError

5 posts were merged into an existing topic: Just can’t sync, why!