Knowledge Article quick find error

When searching Knowledge Articles from the quick find, I am getting the following error:

System.NullReferenceException

This is on CRM 2016 on premise and this also happens in the base version of CRM.  Note that Knowledge Articles has to be manually added to the site map.  Searching when using the Interactive Service Hub does work - it is only within the standard CRM interface where I am seeing this error.  Has anybody else experienced this and found a resolution?  Thank you!

Here is the full error details:

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: System.Xml.XmlException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #1F38A86ADetail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic">
<KeyValuePairOfstringanyType>
<d2p1:key>CallStack</d2p1:key>
<d2p1:value xmlns:d4p1="www.w3.org/.../XMLSchema" i:type="d4p1:string"> at Microsoft.Crm.Core.Application.WebServices.AppGridWebServiceHandler.ProcessRequestInternal(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)</d2p1:value>
</KeyValuePairOfstringanyType>
</ErrorDetails>
<Message>System.Xml.XmlException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #1F38A86A</Message>
<Timestamp>2017-04-03T20:12:18.3046257Z</Timestamp>
<InnerFault>
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:d3p1="schemas.datacontract.org/.../System.Collections.Generic">
<KeyValuePairOfstringanyType>
<d3p1:key>CallStack</d3p1:key>
<d3p1:value xmlns:d5p1="www.w3.org/.../XMLSchema" i:type="d5p1:string"> at Microsoft.Crm.ApplicationQuery.FullTextSearchKnowledgeArticleAnswersByBodyApiCommand.RetrieveData(String searchText, Guid searchSubjectId)
at Microsoft.Crm.ApplicationQuery.SearchAnswersApiCommand.RetrieveData()
at Microsoft.Crm.ApplicationQuery.ExecuteQuery()
at Microsoft.Crm.Application.Platform.Grid.GridDataProviderQueryBuilder.GetData(QueryBuilder queryBuilder)
at Microsoft.Crm.Application.Platform.Grid.GridDataProviderQueryBuilder.LoadQueryData()
at Microsoft.Crm.Application.Platform.Grid.GridDataProviderQueryBuilder.LoadData()
at Microsoft.Crm.Application.Platform.Grid.GridDataProviderBase.PrepareGridData()
at Microsoft.Crm.Application.Platform.Grid.GridDataProviderBase.PrepareData()
at Microsoft.Crm.Application.Controls.GridUIProvider.Render(HtmlTextWriter output)
at Microsoft.Crm.Core.Application.WebServices.AppGridWebServiceHandler.GetRefreshResponseHtml(IGridUIProvider uiProvider, StringBuilder sbTemp)
at Microsoft.Crm.Core.Application.WebServices.AppGridWebServiceHandler.Refresh(String gridXml, StringBuilder sbXml, StringBuilder sbHtml, Boolean returnJsonData)
at Microsoft.Crm.Core.Application.WebServices.AppGridWebServiceHandler.ProcessRequestInternal(HttpContext context)</d3p1:value>
</KeyValuePairOfstringanyType>
</ErrorDetails>
<Message>System.NullReferenceException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #11103862</Message>
<Timestamp>2017-04-03T20:12:18.3046257Z</Timestamp>
<InnerFault i:nil="true" />
<TraceText i:nil="true" />
</InnerFault>
<TraceText i:nil="true" />
</OrganizationServiceFault>