Obtain the MNS receipt information in batch, and report an error under the intranet configuration agent

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• Python Version: 3.6.5
• aliyunsdkcore Version: 1.0.6
• API: batch_receive_message

In the public network environment, there is no problem. In the Intranet environment (the agent has been configured), there is no problem in obtaining the token. An error is reported in batch obtaining the MNS receipt information. The error information is as follows: MNSClientNetworkException ("NetWorkException", "local variable 'msg' referenced before assignment")