Use our own errors

bittensor/core/errors.py

@@ -19,12 +19,22 @@
 
 from typing import Optional, TYPE_CHECKING
 
-from substrateinterface.exceptions import SubstrateRequestException
-
 if TYPE_CHECKING:
     from bittensor.core.synapse import Synapse
 
 
+class SubstrateRequestException(Exception):
+    pass
+
+
+class BlockNotFound(Exception):
+    pass
+
+
+class ExtrinsicNotFound(Exception):
+    pass
+
+
 class ChainError(SubstrateRequestException):
     """Base error for any chain related errors."""
 

bittensor/utils/substrate_interface.py

@@ -22,15 +22,15 @@
 from scalecodec.base import ScaleBytes, ScaleType, RuntimeConfigurationObject
 from scalecodec.type_registry import load_type_registry_preset
 from scalecodec.types import GenericCall, GenericRuntimeCallDefinition
-from substrateinterface.exceptions import (
-    SubstrateRequestException,
-    ExtrinsicNotFound,
-    BlockNotFound,
-)
 from substrateinterface.storage import StorageKey
 from websockets.asyncio.client import connect
 from websockets.exceptions import ConnectionClosed
 
+from bittensor.core.errors import (
+    SubstrateRequestException,
+    ExtrinsicNotFound,
+    BlockNotFound,
+)
 from bittensor.utils import hex_to_bytes
 from bittensor.utils.btlogging import logging