fix: use base64 explicitly

src/cleanup/manager.py

@@ -45,7 +45,7 @@ class AccountCleanupManager:
         )
 
         try:
-            info = await solana_client.get_account_info(ata)
+            info = await solana_client.get_account_info(ata, encoding="base64")
             if not info.value:
                 logger.info(f"ATA {ata} does not exist or already closed.")
                 return

src/trading/buyer.py

@@ -121,7 +121,7 @@ class TokenBuyer(Trader):
                 )
 
         except Exception as e:
-            logger.error(f"Buy operation failed: {str(e)}")
+            logger.error(f"Buy operation failed: {e!s}")
             return TradeResult(success=False, error_message=str(e))
 
     async def _ensure_associated_token_account(
@@ -136,7 +136,7 @@ class TokenBuyer(Trader):
         try:
             solana_client = await self.client.get_client()
             account_info = await solana_client.get_account_info(
-                associated_token_account
+                associated_token_account, encoding="base64"
             )
 
             if account_info.value is None:
@@ -166,7 +166,7 @@ class TokenBuyer(Trader):
                 )
 
         except Exception as e:
-            logger.error(f"Error creating associated token account: {str(e)}")
+            logger.error(f"Error creating associated token account: {e!s}")
             raise
 
     async def _send_buy_transaction(
@@ -245,5 +245,5 @@ class TokenBuyer(Trader):
                 ),
             )
         except Exception as e:
-            logger.error(f"Buy transaction failed: {str(e)}")
+            logger.error(f"Buy transaction failed: {e!s}")
             raise