internal server error exception sharepoint search

There is an internal server error exception sharepoint search.  When users perform a search in a Microsoft SharePoint environment, they receive the following error message:

Internal server error exception: Troubleshoot issues with Microsoft SharePoint Foundation
Additionally, the following critical exception may be written to the ULS log of the SharePoint Web front-end server:
Process: OWSTIMER.EXE (0x1CE0)
Product: SharePoint Foundation
Category: Topology
EvendID: 8031

Message:
An exception occurred while updating addresses for connected app {eaf6c00c-cc3f-460e-8bf2-ad9b991ea6ea_aa16845d-045a-46bc-bbc6-d701ff13950d}. The uri endpoint information may be stale. System.InvalidOperationException: The requested application could not be found at Microsoft.SharePoint.SPTopologyWebServiceApplicationProxy.ProcessCommonExceptions(Uri endpointAddress, String operationName, Exception ex, SPServiceLoadBalancerContext context) at Microsoft.SharePoint.SPTopologyWebServiceApplicationProxy.ExecuteOnChannel(String operationName, CodeBlock codeBlock) at Microsoft.SharePoint.SPTopologyWebServiceApplicationProxy.GetEndPoints(Guid serviceId) at Microsoft.SharePoint.SPConnectedServiceApplicationAddressesRefreshJob.Execute(Guid targetInstanceId) bf94139a-66f8-4aab-af31-406a5ebb6db9

Cause

This issue occurs when the Search service application proxy is associated with a web application but is not associated with any Search service applications in the farm.

Resolution

To allow users to search without receiving this error message, re-associate the web application with a valid Search service application proxy. A valid Search service application proxy will be associated with a Search service application in the Manage service applications option. To do this, follow these steps:

• Open Central Administration.
• Click Manage web applications.
• Select the affected web application.
• On the ribbon, click Service Connections.
• Under Configure Service Application Associations, select the valid Search service application proxy check box.

you can find the Microsoft support link from here

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Categories: sharepoint search

Tags: Configure Service Application Association, event id 8031, internal server error, internal server error exception, internal server error exception correlation id, internal server error sharepoint search, Service Connection, service-application-proxy