How to troubleshoot “Error in 'inputlookup' command: External lookup table 'inputlookup' returned error code 13053..."?

[quantum1]

Hello I'm getting this error when I go into the Enterprise console and look at the security posture it's been going on for a few days any idea how to troubleshoot this?

Thanks in advance

I would appreciate the help as I am relatively new to Splunk and need some guidance.

[Quantum]

Is this a generic error,? I am very new to Splunk and I am sure that there is a relevant log that could give me more information on this what would that log be? would it be on one of the servers like the search head I am kind of lost here any help would be appreciated.

[Quantum]

PreforkedSearchesManager-0] - preforked process=0/175613 died on exception (exit code=111): Error in 'inputlookup' command: External lookup table 'inputlookup' returned error code 13053. Results might be incorrect

Okay I went into the Splunk D log and found this  above does anybody know what this exit 111 means or where I can find more information about this error?

[Quantum]

Error in 'inputlookup' command: External command based lookup 'es_notable_events' is not available because KV Store initialization has failed. Contact your system administrator.

Okay I stopped and started Splunk on this server. now I am getting this key Value Store error how do I fix this?

[Quantum]

trying this systemctl restart splunk