DocValuesField "sr_sort_comment_created" appears more than once in this document

[Lee]

2020-10-08 12:57:49,652+0200 https-jsse-nio2-8443-exec-9 url:/servicedesk/cu...DIT-34474/feedback username:admin.lee url:/rest/servicede...ortal/1/SDIT-34474 username:admin.lee WARN admin.lee 777x9841x3 6wdnq7 10.215.162.4,10.212.143.243 /servicedesk/customer/portal/1/SDIT-34474/feedback [c.a.jira.index.AccumulatingResultBuilder] DocValuesField "sr_sort_comment_created" appears more than once in this document (only one value is allowed per field)java.lang.IllegalArgumentException: DocValuesField "sr_sort_comment_created" appears more than once in this document (only one value is allowed per field)    

at org.apache.lucene.index.NumericDocValuesWriter.addValue(NumericDocValuesWriter.java:55)    

at org.apache.lucene.index.DefaultIndexingChain.indexDocValue(DefaultIndexingChain.java:536)    

at org.apache.lucene.index.DefaultIndexingChain.processField(DefaultIndexingChain.java:466)    

at org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:392)    

at org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:240)    

at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:497)    

at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1729)    

at com.atlassian.jira.index.WriterWrapper.updateDocumentsWithVersion(WriterWrapper.java:154)    

at com.atlassian.jira.index.WriterWithStats.updateDocumentsWithVersion(WriterWithStats.java:170)    

at com.atlassian.jira.index.Operations$ConditionalUpdateWithVersion.perform(Operations.java:243)    

at com.atlassian.jira.index.QueueingIndex$CompositeOperation.perform(QueueingIndex.java:187)    

at com.atlassian.jira.index.DefaultIndexEngine$FlushPolicy.perform(DefaultIndexEngine.java:76)    

at com.atlassian.jira.index.DefaultIndexEngine.write(DefaultIndexEngine.java:141)    

at com.atlassian.jira.index.DefaultIndex.perform(DefaultIndex.java:28)    

at com.atlassian.jira.index.QueueingIndex$Task.perform(QueueingIndex.java:132)    

at com.atlassian.jira.index.QueueingIndex$Task.index(QueueingIndex.java:144)    

at com.atlassian.jira.index.QueueingIndex$Task.run(QueueingIndex.java:111)    

at java.lang.Thread.run(Thread.java:748)

[Guido Scollo]

Hi community, is there an explanation for this exception?