Persistent Error - "Lost connection to the server"

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Persistent Error - “Lost connection to the server”

Dear Support Team,

We are experiencing critical stability issues with our n8n instance for several days, specifically with the error “Lost connection to the server”.

Technical Details:

  1. Behavior: The error occurs repeatedly during workflow execution, causing the n8n editor to disconnect automatically and failing to complete the automation.

  2. Context: The issue was initially identified in operations involving the Airtable node.

  3. Severity: Currently, the error persists even in different workflows, such as when attempting RSS feed execution and HTML manipulation (Get Webpage HTML Content).

  4. Actions Taken: We have already performed a complete reconfiguration of the involved nodes and verified input/output parameters, but the connection error persists.

Preliminary Diagnosis: This appears to be a server overload issue, connection timeout, or infrastructure failure hosting the n8n instance, as the workflow logic has been reviewed and validated.

We request an urgent analysis of the server logs to identify the root cause of this instability.

Sincerely

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1 Like
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Hi @Washington_Lucio_And
Please validate whether the executions are still running or completing successfully in the Executions tab. Additionally, collect the n8n server logs at the exact time the disconnection occurs to identify any backend errors. It is also important to check the host resources (CPU and RAM usage) and confirm whether the n8n process is restarting unexpectedly. If you are using a reverse proxy, ensure that WebSocket support is properly configured and that timeout settings are adequate. To reduce instability, avoid running long or heavy workflows directly from the editor and consider using asynchronous execution or queue mode for more resource-intensive workloads.

If the issue persists after these checks, you should contact n8n support directly and provide the relevant logs and timestamps for further investigation.