SharePoint trouble shooting - Search stopped work due to default trust certificate error

Search doesn't return any result. So checked the ULS log and found out the below error,

Event ID: 8311 An operation failed because the following certificate has validation errors:\n\nSubject Name: CN=SharePoint Security Token Service, OU=SharePoint, O=Microsoft, C=US\nIssuer Name: CN=SharePoint Root Authority, OU=SharePoint, O=Microsoft, C=US\nThumbprint: EB7076586E2CC4A69ED2629497A831D99EB31A1E\n\nErrors:\n\n The root of the certificate chain is not a trusted root authority


Then running the following powershell script to re-issue the certificate and fixed the error.
$rootCert = (Get-SPCertificateAuthority).RootCertificate
New-SPTrustedRootAuthority -Name "localNew" -Certificate $rootCert
 
Restart IIS on all SharePoint servers