timestamp = (Date) ConfigUtils.getObject(session, new Date(), "maven.startTime");
        Object bn = ConfigUtils.getObject(session, null, "maven.buildNumber");
        if (bn instanceof Integer integer) {
            this.buildNumber = integer;
        } else if (bn instanceof String string) {
            this.buildNumber = Integer.valueOf(string);
        } else {
            this.buildNumber = null;

Edit `src/main/resources/fess_config.properties`:

Find the `supported.languages` property (around line 202) and ensure your language code is included:

```properties
supported.languages=ar,bg,bn,ca,ckb_IQ,cs,da,de,el,en_IE,en,es,et,eu,fa,fi,fr,gl,gu,he,hi,hr,hu,hy,id,it,ja,ko,lt,lv,mk,ml,nl,no,pa,pl,pt_BR,pt,ro,ru,si,sq,sv,ta,te,th,tl,tr,uk,ur,vi,zh_CN,zh_TW,zh
```

**Optional configurations:**

    protected static Map<String, Map<String, FieldAnalyzerMapping>> fieldAnalyzerMappingMap = new ConcurrentHashMap<>();

    /** Supported languages. */
    protected static final String[] SUPPORTED_LANGUAGES = { "ar", "bg", "bn", "ca", "cs", "da", "de", "el", "en", "es", "et", "fa", "fi",
            "fr", "gu", "he", "hi", "hr", "hu", "id", "it", "ja", "ko", "lt", "lv", "mk", "ml", "nl", "no", "pa", "pl", "pt", "ro", "ru",

			t.Errorf("%s: Discard(%d) = (%v, %v); want (%v, %v)", tt.name, tt.n, discarded, ge, tt.want, we)
			continue
		}
		if bn := br.Buffered(); bn != tt.wantBuffered {
			t.Errorf("%s: after Discard, Buffered = %d; want %d", tt.name, bn, tt.wantBuffered)
		}
	}

}

func TestReaderSize(t *testing.T) {
	if got, want := NewReader(nil).Size(), DefaultBufSize; got != want {

query.json.default.preference=_query
# Default preference for GSA queries.
query.gsa.default.preference=_query
# Language mapping for queries.
query.language.mapping=\
ar=ar\n\
bg=bg\n\
bn=bn\n\
ca=ca\n\
ckb-iq=ckb-iq\n\
ckb_IQ=ckb-iq\n\
cs=cs\n\
da=da\n\
de=de\n\
el=el\n\
en=en\n\
en-ie=en-ie\n\
en_IE=en-ie\n\
es=es\n\
et=et\n\
eu=eu\n\
fa=fa\n\
fi=fi\n\

am: አማርኛ
an: aragonés
ar: اللغة العربية
as: অসমীয়া
av: авар мацӀ
ay: aymar aru
az: azərbaycan dili
ba: башҡорт теле
be: беларуская мова
bg: български език
bh: भोजपुरी
bi: Bislama
bm: bamanankan
bn: বাংলা
bo: བོད་ཡིག
br: brezhoneg
bs: bosanski jezik
ca: Català
ce: нохчийн мотт
ch: Chamoru
co: corsu
cr: ᓀᐦᐃᔭᐍᐏᐣ
cs: čeština
cu: ѩзыкъ словѣньскъ
cv: чӑваш чӗлхи
cy: Cymraeg
da: dansk

d \u043a\u04af\u043d",M:"\u0431\u0456\u0440 \u0430\u0439",MM:"%d \u0430\u0439",y:"\u0431\u0456\u0440 \u0436\u044b\u043b",yy:"%d \u0436\u044b\u043b"},dayOfMonthOrdinalParse:/\d{1,2}-(\u0448\u0456|\u0448\u044b)/,ordinal:function(e){return e+(bn[e]||bn[e%10]||bn[100<=e?100:null])},week:{dow:1,doy:7}});var Sn={1:"\u17e1",2:"\u17e2",3:"\u17e3",4:"\u17e4",5:"\u17e5",6:"\u17e6",7:"\u17e7",8:"\u17e8",9:"\u17e9",0:"\u17e0"},Hn={"\u17e1":"1","\u17e2":"2","\u17e3":"3","\u17e4":"4","\u17e5":"5","\u17e6":"6"...

    /** The key of the configuration. e.g. _query */
    String QUERY_GSA_DEFAULT_PREFERENCE = "query.gsa.default.preference";

    /** The key of the configuration. e.g. ar=ar<br>
     * bg=bg<br>
     * bn=bn<br>
     * ca=ca<br>
     * ckb-iq=ckb-iq<br>
     * ckb_IQ=ckb-iq<br>
     * cs=cs<br>
     * da=da<br>
     * de=de<br>
     * el=el<br>
     * en=en<br>
     * en-ie=en-ie<br>

blogspot.sk
blogspot.sn
blogspot.td
blogspot.tw
blogspot.ug
blogspot.vn
blogsyte.com
bloomberg
blue
bluebite.io
blush.jp
bm
bmd.br
bmoattachments.org
bms
bmw
bn
bn.it
bnpparibas
bnr.la
bo
bo.it
bo.nordland.no
bo.telemark.no
boats
boavista.br
bodo.no
bodø.no
boehringer
bofa
bokn.no
boldlygoingnowhere.org

		}
	}

	// TestXLStorage case with invalid volume name.
	// A valid volume name should be at least of size 3.
	err = xlStorage.AppendFile(t.Context(), "bn", "yes", []byte("hello, world"))
	if err != errVolumeNotFound {
		t.Fatalf("expected: \"Invalid argument error\", got: \"%s\"", err)
	}
}

// TestXLStorage xlStorage.RenameFile()