fix: return false if error got returned while trying to estimate the gas cost in _simulate_create_tx_flow

Author: 1yam

src/aleph/sdk/connectors/superfluid.py

@@ -38,19 +38,22 @@ def __init__(self, account: ETHAccount):
             self.cfaV1Instance = CFA_V1(account.rpc, account.chain_id)
 
     def _simulate_create_tx_flow(self, flow: Decimal, block=True) -> bool:
-        operation = self.cfaV1Instance.create_flow(
-            sender=self.normalized_address,
-            receiver=to_normalized_address(
-                "0x0000000000000000000000000000000000000001"
-            ),  # Fake Address we do not sign/send this transactions
-            super_token=self.super_token,
-            flow_rate=int(to_wei_token(flow)),
-        )
-
-        populated_transaction = operation._get_populated_transaction_request(
-            self.account.rpc, self.account._account.key
-        )
-        return self.account.can_transact(tx=populated_transaction, block=block)
+        try:
+            operation = self.cfaV1Instance.create_flow(
+                sender=self.normalized_address,
+                receiver=to_normalized_address(
+                    "0x0000000000000000000000000000000000000001"
+                ),  # Fake Address we do not sign/send this transactions
+                super_token=self.super_token,
+                flow_rate=int(to_wei_token(flow)),
+            )
+
+            populated_transaction = operation._get_populated_transaction_request(
+                self.account.rpc, self.account._account.key
+            )
+            return self.account.can_transact(tx=populated_transaction, block=block)
+        except Exception:
+            return False
 
     async def _execute_operation_with_account(self, operation: Operation) -> str:
         """