Stop spamming my error log please :/ !

Is there a way to stop spamming :
<h4>You are submitting requests too quickly. Please retry your requests at a slower rate. For more information, see Efficiency Guidelines.</h4>

In my error log ? It’s in french :
<h4>Vous envoyez vos demandes trop rapidement. Veuillez essayer \xc3\xa0 nouveau \xc3\xa0 un rythme plus lent. Pour un compl\xc3\xa9ment d\xe2\x80\x99information, consultez les >Principes d\xe2\x80\x99efficacit\xc3\xa9.</h4>, referer: https://otakugame.fr/wp-admin/admin-ajax.php?action=aalb_update_table&nonce=673b61e64b

It’s slow down so much my server, I don’t know what to do to stop it, it getting me mad T_T !