Suricata-update - Error -- Dataset file was not found


I am trying to load a custom rule with suricata-update, the rule looks like this :

alert dns $HOME_NET any → any any (msg:“test domain”; dns.query; dataset:isset,domain-b64.list,type string,load /var/lib/suricata/custom-rules/domain-b64.list,memcap 150mb,hashsize 100000; sid:100005;)

and I have this error :

– Dataset file domain-b64.list was not found

Any Idea what I am doing wrong ?

ps: I am running suricata 6.0.4

Thank you

Ok so it seems that the error does not affect the rule or anything .