From 558350454c3efaf640e6b97c4883f7a2dc958a25 Mon Sep 17 00:00:00 2001
From: Kevin Tian <kevin.tian@ibm.com>
Date: Mon, 5 Jun 2023 13:44:09 -0400
Subject: [PATCH] Fix JSONDecoder 'encoding' bug  (#649)

* Fix serialization bug

* Revert "Fix serialization bug"

This reverts commit 72a08bc8c5b92833334d8a2edbd3950c08f39259.

* Try suggested fix

* check for 'encoding'
---
 qiskit_ibm_provider/utils/json.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/qiskit_ibm_provider/utils/json.py b/qiskit_ibm_provider/utils/json.py
index c64434e7e..8b7eeb38a 100644
--- a/qiskit_ibm_provider/utils/json.py
+++ b/qiskit_ibm_provider/utils/json.py
@@ -263,6 +263,7 @@ class RuntimeDecoder(json.JSONDecoder):
     """JSON Decoder used by runtime service."""
 
     def __init__(self, *args: Any, **kwargs: Any):
+        kwargs.pop("encoding", None)
         super().__init__(object_hook=self.object_hook, *args, **kwargs)
         self.__parameter_vectors: Dict[str, Tuple[ParameterVector, set]] = {}
         self.__read_parameter_expression = (