This type of error may occur in the below scenarios.
1) It indicates network connectivity trouble. If the error message includes “during query” then we have to look at the query and the number of rows being sent.
Then try increasing “net_read_timeout” variable from its default value.
2) It can happen when the client is attempting the initial connection to the server. If your “connect_timeout” value is set to only a few seconds, you can increase the same for resolving this issue.
3) It can occur when using BLOB values that are larger than “max_allowed_packet” and may get “packet too large” as error, then increase the “max_allowed_packet” value to resolve the same.
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