Lookups missing and receiving error message

[bullbo]

Getting the following error on many of my previously working searches, any ideas on how to fix it?

 3 errors occurred while the search was executing. Therefore, search results might be incomplete. Hide errors.
Error 'Could not find all of the specified lookup fields in the lookup table.' for conf 'WMI:WinEventLog:Security' and lookup table 'windows_app_lookup'.
Error 'Could not find all of the specified lookup fields in the lookup table.' for conf 'source::WinEventLog:Security' and lookup table 'windows_app_lookup'.
Error 'Could not find all of the specified lookup fields in the lookup table.' for conf 'source::XmlWinEventLog:Security' and lookup table 'windows_app_lookup'.

Anyone know what I'm missing?

[adonio · Accepted solution]

see here:
https://answers.splunk.com/answers/667276/why-is-the-windows-app-lookup-giving-errors-in-spl.html
https://answers.splunk.com/answers/677361/error-could-not-find-all-of-the-specified-lookup-f-2.html