Elasticsearch master node is not up in version 8.12.0 of multinode cluster

Elastic Stack Elasticsearch
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When I restart the elasticsearch node 1 from which I formed a multinode cluster using enrollment token. Service is failed and getting the logs.
tail -f /var/log/elasticsearch/HELK.log| grep ERROR
[ERROR][o.e.x.s.a.s.FileServiceAccountTokenStore] [prod-helk-em1] failed to parse service tokens file [/etc/elasticsearch/service_tokens]. skipping/removing all tokens...
[2024-02-21T11:14:27,941][ERROR][o.e.b.Elasticsearch ] [prod-helk-em1] fatal exception while booting Elasticsearch

I am not getting why it is happneing

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