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The error message “#2006 – MySQL server has gone away” typically occurs when the connection to the MySQL server is lost during the execution of a query. This can happen due to various reasons:

1. Timeout: If the server takes too long to respond, the connection may time out.
2. Server Restart: If the MySQL server is restarted or shuts down unexpectedly, the connection will be lost.
3. Resource Limit: If the server’s resources are exhausted, it may terminate connections to free up resources.
4. Network Issues: Interruptions in the network connection between the client and the server can cause the connection to drop.
5. Large Queries: Executing large queries that consume a lot of server resources might cause the server to terminate the connection.

To address this issue, you can try the following:

1. Reconnect: Attempt to reconnect to the MySQL server and resend the query.
2. Check Server Status: Ensure that the MySQL server is running properly and hasn’t encountered any issues.
3. Optimize Queries: If large queries are causing the problem, try optimizing them to reduce resource consumption.
4. Increase Timeout Settings: Adjust timeout settings in MySQL configuration if timeouts are a frequent issue.
5. Check Network Connection: Verify that there are no network issues causing the connection to drop.
6. Check Server Logs: Look into the MySQL server logs for any clues about why the connection was terminated.
7. Check Resource Usage: Monitor server resource usage to see if there are any spikes or limits being reached.

By addressing these potential causes, you can troubleshoot and resolve the issue causing the MySQL server to go away.