[CHIA-3717] improve logging of NO_OVERFLOWS_IN_FIRST_SUB_SLOT_NEW_EPOCH (#20016)

improve logging of NO_OVERFLOWS_IN_FIRST_SUB_SLOT_NEW_EPOCH

Author: arvidn

chia/full_node/full_node_api.py

@@ -72,6 +72,7 @@
 from chia.types.peer_info import PeerInfo
 from chia.util.batches import to_batches
 from chia.util.db_wrapper import SQLITE_MAX_VARIABLE_NUMBER
+from chia.util.errors import Err, ValidationError
 from chia.util.hash import std_hash
 from chia.util.limited_semaphore import LimitedSemaphoreFullError
 from chia.util.task_referencer import create_referenced_task
@@ -1133,6 +1134,12 @@ async def signed_values(
         try:
             await self.full_node.add_unfinished_block(new_candidate, None, True)
         except Exception as e:
+            if isinstance(e, ValidationError) and e.code == Err.NO_OVERFLOWS_IN_FIRST_SUB_SLOT_NEW_EPOCH:
+                self.full_node.log.info(
+                    f"Failed to farm block {e}. Consensus rules prevent this block from being farmed. Not retrying"
+                )
+                return None
+
             # If we have an error with this block, try making an empty block
             self.full_node.log.error(f"Error farming block {e} {new_candidate}")
             candidate_tuple = self.full_node.full_node_store.get_candidate_block(