Reindex issue

Hi Team,

We are getting the below error during reindexing.

Document contains at least one immense term in field="ddm__keyword__28372__body_of_text_en_US" (whose UTF8 encoding is longer than the max length 32766), all of which were skipped. Please correct the analyzer to not produce such terms. The prefix of the first immense term is: '[60, 112, 62, 60, 97, 32, 110, 97, 109, 101, 61, 34, 116, 111, 112, 34, 62, 60, 47, 97, 62, 60, 47, 112, 62, 10, 10, 60, 112, 32]...', original message: bytes can be at most 32766 in length; got 43053

Please find elastic server details below.

{
"name" : "node-1",
"cluster_name" : "LiferayElasticsearchCluster",
"cluster_uuid" : "jqr2bB6gTe6zldrhTsouXQ",
"version" : {
"number" : "6.8.13",
"build_flavor" : "default",
"build_type" : "zip",
"build_hash" : "be13c69",
"build_date" : "2020-10-16T09:09:46.555371Z",
"build_snapshot" : false,
"lucene_version" : "7.7.3",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}

Is this something a reindex that Liferay is running, or something you have run?