Some errors on log file full_node full_node_server : ERROR Exception: Failed to fetch block

Hello
I was checking my log file and I found a series of error like this:
WARNING Cannot write to closing transport followed by ip address;

7:23:19.617 full_node full_node_server : ERROR Exception: Failed to fetch block 454131 from None, timed out <class ‘ValueError’>, closing connection None. Traceback (most recent call last)
File “chia\server\server.py”, line 536, in api_call
File “asyncio\tasks.py”, line 414, in wait_for
File “chia\server\server.py”, line 533, in wrapped_coroutine
File “chia\server\server.py”, line 526, in wrapped_coroutine
File “chia\full_node\full_node_api.py”, line 104, in new_peak
File “chia\full_node\full_node.py”, line 373, in new_peak
File “chia\full_node\full_node.py”, line 322, in short_sync_backtrack
File “chia\full_node\full_node.py”, line 307, in short_sync_backtrack
ValueError: Failed to fetch block 454131 from None, timed out

Just now I set the level log file to INFO before was warning…I forgot to do that :slight_smile:
they are big problem?

thank yuo