diff --git a/lnbits/extensions/cashu/views_api.py b/lnbits/extensions/cashu/views_api.py
index 2e613b07e..1442634cc 100644
--- a/lnbits/extensions/cashu/views_api.py
+++ b/lnbits/extensions/cashu/views_api.py
@@ -306,13 +306,13 @@ async def melt_coins(
         else:
             logger.debug(f"Cashu: Payment failed for {invoice_obj.payment_hash}")
     except Exception as e:
-        logger.debug(f"Cashu: Exception for {invoice_obj.payment_hash}: {e}")
+        logger.debug(f"Cashu: Exception for {invoice_obj.payment_hash}: {str(e)}")
         raise HTTPException(
             status_code=HTTPStatus.BAD_REQUEST,
             detail=f"Cashu: {str(e)}",
         )
     finally:
-        logger.debug(f"Cashu: Unset pending for {invoice_obj.payment_hash}: {e}")
+        logger.debug(f"Cashu: Unset pending for {invoice_obj.payment_hash}")
         # delete proofs from pending list
         await ledger._unset_proofs_pending(proofs)