我有两个错误，无法解决。

第一个是：

  

json.decoder.JSONDecodeError：预期值：第1行第1列（字符0）。

第二个是：

  

KeyError [“数据字节1：”]

def save_details():

global details

with open("customerDetails.json","wb+") as customer_details: #open customerDetails.json 

        details = { 
            "Data Bytes 1: ": username,"Data Bytes 2: ": user_phone_number,"Data Bytes 3: ": user_password 
        }

        customer_details.write(base64.b64encode(json.dumps(details).encode()))

with open("customerDetails.json","rb") as customer_details: 
        details = json.loads(base64.b64decode(customer_details.read()).decode()) 

customers = json.loads(base64.b64decode(open("customerDetails.json","rb").read()))


if username == customers["Data Bytes 1: "] and user_password == customers["Data Bytes 3: "]:
         print("\nLogin in Successful! ")

else:
      print("\nThere is trouble logging in,please try again.\n ")
      cancel_order() '''

这是我的代码的一部分，与此问题相关。

有没有人知道如何解决此问题？