Lost sync and wont resync

[Kali123411]

It appears something in chia is blocking my connections and not allowing me to sync...
2021-05-17T15:41:29.912 full_node chia.full_node.full_node: ERROR Exception in create outbound connections:
2021-05-17T15:41:29.916 full_node chia.full_node.full_node: ERROR Traceback: Traceback (most recent call last):
File "chia\server\node_discovery.py", line 325, in _connect_to_peers
File "asyncio\tasks.py", line 595, in sleep
concurrent.futures._base.CancelledError

2021-05-17T15:41:29.918 full_node full_node_server : WARNING Trying to ban localhost for 10, but will not ban
2021-05-17T15:41:29.921 full_node asyncio : ERROR Task exception was never retrieved
future: <Task finished coro=<ChiaServer.incoming_api_task..api_call() done, defined at chia\server\server.py:482> exception=CancelledError()>
concurrent.futures._base.CancelledError
2021-05-17T15:41:30.173 full_node full_node_server : WARNING Banning 2.183.9.189 for 10 seconds
2021-05-17T15:41:30.176 full_node asyncio : ERROR Task exception was never retrieved
future: <Task finished coro=<ChiaServer.incoming_api_task..api_call() done, defined at chia\server\server.py:482> exception=CancelledError()>
concurrent.futures._base.CancelledError
2021-05-17T15:41:31.964 full_node full_node_server : WARNING Exception closing socket: Traceback (most recent call last):
File "chia\server\ws_connection.py", line 186, in close
File "aiohttp\client_ws.py", line 195, in close
File "aiohttp\streams.py", line 644, in read
File "aiohttp\streams.py", line 604, in read
concurrent.futures._base.CancelledError

2021-05-17T15:41:31.965 full_node full_node_server : WARNING Banning 39.109.115.120 for 10 seconds
2021-05-17T15:41:31.967 full_node asyncio : ERROR Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x000001A401F31248>
2021-05-17T15:44:08.268 full_node full_node_server : ERROR Exception: <class 'concurrent.futures._base.CancelledError'>, closing connection None. Traceback (most recent call last):
File "chia\server\server.py", line 531, in api_call
File "asyncio\tasks.py", line 435, in wait_for
concurrent.futures._base.CancelledError

[Kali123411]

It just sync'd again and then lost connection immediately

[BrandtH22]

If you are still experiencing the issues it is recommended to upgrade to the latest version of chia. Please download it from here: https://www.chia.net/downloads/

Since this issue has been open for a number of years without additional comments, we will be closing this ticket but if we have closed this ticket in error do not hesitate to reach out to us again with any followup questions, comments, or if the issue persists after an update.

Please note that upgrading major versions of chia generally requires the config.yaml to be recreated using these steps:
1. Stop chia
2. Rename the config or move it to a different directory
3. In CLI run chia init
4. Copy any custom settings from the old config to the new (plot drive directories, pool info, trusted node info, etc) - be careful here as yaml is very picky about formatting including those leading spaces
5. Start Chia

The best place to reach our support team is on Discord (https://discord.gg/chia) or by reopening this ticket.