"Was not able to add blocks xxxxxx-xxxxxx" possible bug

[Tomaszu97]

While waiting for my wallet to sync I got a lot of these messages stating that there cant be no more blocks added
Looks like a bug to me but I wanted to seek for help first, maybe I'm doing something wrong.
Also I'm having sync issues for weeks now - the full node goes from fully synced to not synced (instead of syncing) - maybe that is connected somehow?

`2021-10-14T15:33:16.993 wallet chia.wallet.wallet_node : ERROR Loop exception in sync Was not able to add blocks 888595-888627. Traceback (most recent call last):
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 608, in sync_job
await self._sync()
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 668, in _sync
await self.batch_sync_to_peak(fork_height, peak)
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 565, in batch_sync_to_peak
raise RuntimeError(f"Was not able to add blocks {start_height}-{end_height}")
RuntimeError: Was not able to add blocks 888595-888627

2021-10-14T15:43:18.195 full_node full_node_server : ERROR Exception: <class 'asyncio.exceptions.TimeoutError'>, closing connection {'host': '127.0.0.1', 'port': 8449}. Traceback (most recent call last):
File "/home/lubuntu/git/chia-blockchain/chia/server/server.py", line 569, in api_call
response: Optional[Message] = await asyncio.wait_for(wrapped_coroutine(), timeout=timeout)
File "/usr/lib/python3.8/asyncio/tasks.py", line 501, in wait_for
raise exceptions.TimeoutError()
asyncio.exceptions.TimeoutError

2021-10-14T15:43:18.206 wallet chia.wallet.wallet_node : ERROR Error while trying to fetch from peer:Peer returned no response Traceback (most recent call last):
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 555, in batch_sync_to_peak
added, advanced_peak = await self.fetch_blocks_and_validate(
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 687, in fetch_blocks_and_validate
raise ValueError("Peer returned no response")
ValueError: Peer returned no response

2021-10-14T15:43:18.207 wallet chia.wallet.wallet_node : ERROR Loop exception in sync Was not able to add blocks 890110-890142. Traceback (most recent call last):
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 608, in sync_job
await self._sync()
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 668, in _sync
await self.batch_sync_to_peak(fork_height, peak)
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 565, in batch_sync_to_peak
raise RuntimeError(f"Was not able to add blocks {start_height}-{end_height}")
RuntimeError: Was not able to add blocks 890110-890142

2021-10-14T15:45:50.080 daemon chia.daemon.server : INFO sending term signal to chia_wallet
2021-10-14T15:45:50.557 wallet chia.wallet.wallet_node : ERROR Error while trying to fetch from peer:Peer returned no response Traceback (most recent call last):
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 555, in batch_sync_to_peak
added, advanced_peak = await self.fetch_blocks_and_validate(
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 687, in fetch_blocks_and_validate
raise ValueError("Peer returned no response")
ValueError: Peer returned no response

2021-10-14T15:45:50.557 wallet chia.wallet.wallet_node : ERROR Loop exception in sync Was not able to add blocks 888595-888627. Traceback (most recent call last):
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 608, in sync_job
await self._sync()
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 668, in _sync
await self.batch_sync_to_peak(fork_height, peak)
File "/home/lubuntu/git/chia-blockchain/chia/wallet/wallet_node.py", line 565, in batch_sync_to_peak
raise RuntimeError(f"Was not able to add blocks {start_height}-{end_height}")
RuntimeError: Was not able to add blocks 888595-888627
`

[Tomaszu97]

Also this issue looks like something similar

[BrandtH22]

@Tomaszu97 , the newest version(s) of chia has fixes in place to resolve this issue. Please download it from here: https://www.chia.net/downloads/

Since this issue has been resolved with the latest version(s) of chia 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.