[Rspamd-Users] Error 500 on rspamc learn_spam

[Will van Gulik]

Hi, 

I'm running rspamd 2.5 from rspamd's repo and I have the following issue for some
days/month : (couldn't log when it exactly started, sorry). Distrib is
debian buster, up to date.

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$cat my_spam_mail_from_my_imap_junk_folder.eml | /usr/bin/rspamc learn_spam
Results for file: stdin (0.088 seconds)
HTTP error: 500, Unknown statistics error, found when storing data on backend; classifier: (null)
----8<----

I noticed that was happening when my sieve script to learn spam / ham
didn't worked anymore on my dovecot. I upgraded recently from 1.8 to
2.5 but I also have that on a fresh install of a 2.5 . 

Here is my output for the classifier :

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$rspamadm configdump classifier
2020-06-03 13:56:58 #0(main) cfg; rspamd_config_post_load: CPU doesn't have SSSE3 instructions set required for hyperscan, disable it
2020-06-03 13:56:58 #0(main) <9unm9u>; cfg; rspamd_language_detector_init: cannot compile stop words for 0 language group: regexp parsing error: 'character code point value in \x{} or \o{} is too large' at position 7; pattern: a\x{10d}koli
2020-06-03 13:56:58 #0(main) <9unm9u>; cfg; rspamd_language_detector_init: cannot compile stop words for 1 language group: regexp parsing error: 'character code point value in \x{} or \o{} is too large' at position 6; pattern: \x{441}\x{430}\x{43c}
2020-06-03 13:56:58 #0(main) <9unm9u>; cfg; rspamd_language_detector_init: cannot compile stop words for 2 language group: regexp parsing error: 'character code point value in \x{} or \o{} is too large' at position 6; pattern: \x{906}\x{92b}\x{942}
2020-06-03 13:56:58 #0(main) <9unm9u>; cfg; rspamd_language_detector_init: cannot compile stop words for 3 language group: regexp parsing error: 'character code point value in \x{} or \o{} is too large' at position 6; pattern: \x{647}\x{646}\x{627}\x{644}\x{643}
2020-06-03 13:56:59 #0(main) <9unm9u>; lua; rbl.lua:1166: invalid config for blocklistde_received: extra fields: "ignore_whitelists", RBL is DISABLED
2020-06-03 13:56:59 #0(main) <9unm9u>; lua; rbl.lua:1166: invalid config for spamhaus_received: extra fields: "ignore_whitelists", RBL is DISABLED
*** Section classifier ***
bayes {
    backend = "redis";
    store_tokens = false;
    min_tokens = 11;
    min_learns = 200;
    cache {
    }
    new_schema = true;
    statfile {
        spam = false;
        symbol = "BAYES_HAM";
    }
    statfile {
        spam = true;
        symbol = "BAYES_SPAM";
    }
    tokenizer {
        name = "osb";
    }
    learn_condition = "return require(\"lua_bayes_learn\").can_learn";
    signatures = false;
}

*** End of section classifier ***
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Where should I look to debug that one ? I'm a bit lost on what
rspam_learn is expecting from whom.

Happy to take any pointers to this interesting case,

Cheers,

Will