> Source: [sk127294](https://support.checkpoint.com/results/sk/sk127294)

# sk127294 - "The connection with the server was lost. Any unsaved changes will be preserved" error after removing cluster from policy

| Property | Value |
|----------|-------|
| Solution ID | sk127294 |
| Date Created | 2018-05-18 |
| Last Modified | 2018-05-22 |
| Technical Level | Advanced |
| Products | SmartConsole |
| Versions | R82.10, R82.x, R82.20, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * After the user removes a cluster from the policy and publishes the changes, the following error appears:   
  `The connection with the server was lost. Any unsaved changes will be preserved.`   
* The $FWDIR/log/cpm.elg shows:

  ```
  
  could not find cluster parent UID (getClusterObject) on member FW2, d81daf6d-9fc6-4509-9f2d-9c63d4bd92df
  ERROR gateway_legacy.triggers.CommonGatewayAggregatorUtils [taskExecutor-10]: GatewayAggregator of cluster member, parentCluster information are missing:(osInfo,HwName,ImageName,VersionName,Monitoring,ParentName) because parentCluster = null. Aggregator objid 'b6207eb1-1932-4701-922e-b7c682da9d1f' , original objid '6e710ba7-4bfd-455d-9530-ba90b1c69a90'
  �?��?�
  ERROR gateway_legacy.triggers.ClusterMemberAggregatorUpdateTrigger [taskExecutor-10]: could not find cluster parent UID (getClusterObject) on member FW1, c66324b0-d53d-4a05-8c90-b975595bdba2
  ERROR gateway_legacy.triggers.CommonGatewayAggregatorUtils [taskExecutor-10]: GatewayAggregator of cluster member, parentCluster information are missing:(osInfo,HwName,ImageName,VersionName,Monitoring,ParentName) because parentCluster = null. Aggregator objid '5ae5adc7-37e4-485c-8246-79eaf2412836' , original objid '6e710ba7-4bfd-455d-9530-ba90b1c69a90'
  ```

* The user cannot login to the dashboard for 2-3 minutes after the issue occurs.

## Cause

The CPM process stops working when the cluster is deleted.

## Solution

This solution requires authentication. Please log in to view the full solution.

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