Failed to marshall domain instance Reference

[nazarchaparov]

Hello,
I have 3 domain classes:

class Song extends AuditSection implements Serializable {

	static searchable = {
        artist reference: true
        songArtists component: true
    }
	
	Artist artist

	static hasMany = [songArtists: SongArtist]
					  
}

class SongArtist implements Serializable {

	static searchable = {
        only = ["artist", "sortOrder"]
        root false
        artist reference: true
    }
	
	Artist artist
    Song song
    Integer sortOrder

}

class Artist extends AuditSection implements Serializable {

	static searchable = {
		except = ["songArtists", "songs"]
	}
	
	static hasMany = [songArtists: SongArtist, songs: Song]

}

When I index the main song class I get an error (i think, plugin incorrectly finds the ref class) :
`2022-07-31 13:40:33.789 ERROR --- [nio-8282-exec-4] g.p.e.index.IndexRequestQueue : Error Indexing class com.tm.aydym.Song (index: com.tm.aydym.song_write , type: song) of id 9529

grails.plugins.elasticsearch.exception.IndexException: Failed to marshall domain instance [Ömrüme (ýyldyz artistler toplumy)]
Caused by: java.lang.AssertionError: Marshalled object com.tm.aydym.artist.SongArtist : 730429 is not [class com.tm.aydym.artist.Artist].. Expression: refClass.isAssignableFrom(object.getClass())
at org.codehaus.groovy.runtime.InvokerHelper.assertFailed(InvokerHelper.java:422)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.assertFailed(ScriptBytecodeAdapter.java:663)
at grails.plugins.elasticsearch.conversion.marshall.SearchableReferenceMarshaller.doMarshall(SearchableReferenceMarshaller.groovy:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)`