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if somehow peer got down before completion of endorsment phase.
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your peer is not insync with other peer.
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chaincode is taking more time than predefined execution_time_out to execute the transaction.
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make sure peer is running throughout the transaction and fully sync with other peers of the defined channel.
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increases the chaincode execution time from default 30s environment:
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CORE_CHAINCODE_EXECUTETIMEOUT=300s
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