VM warning occared when elasticsearch start

I try to make ELK. but elasticsearch is not work. (of course, i can`t ^^; )

it is using s/w version. and H/W is vm (citrix)

OS : Windows Server 2012 R2
elasticsearch : 7.0.0
jvm : 1.8.0_211

when start elasticsearch, orred error like this.

"""
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in ve
rsion 9.0 and will likely be removed in a future release.

"""

i don`t know, what to do. Please let me know the solution.

PS. detail

C:\C\elasticsearch-7.0.0_old\bin>elasticsearch.bat
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in ve
rsion 9.0 and will likely be removed in a future release.
Exception in thread "main" org.elasticsearch.bootstrap.BootstrapException: org.a
pache.lucene.index.IndexFormatTooNewException: Format version is not supported (
resource BufferedChecksumIndexInput(SimpleFSIndexInput(path="C:\ProgramData\Elas
tic\Elasticsearch\config\elasticsearch.keystore"))): 4 (needs to be between 1 an
d 3)
Likely root cause: org.apache.lucene.index.IndexFormatTooNewException: Format ve
rsion is not supported (resource BufferedChecksumIndexInput(SimpleFSIndexInput(p
ath="C:\ProgramData\Elastic\Elasticsearch\config\elasticsearch.keystore"))): 4 (
needs to be between 1 and 3)
at org.apache.lucene.codecs.CodecUtil.checkHeaderNoMagic(CodecUtil.java:
216)
at org.apache.lucene.codecs.CodecUtil.checkHeader(CodecUtil.java:198)
at org.elasticsearch.common.settings.KeyStoreWrapper.load(KeyStoreWrappe
r.java:217)
at org.elasticsearch.bootstrap.Bootstrap.loadSecureSettings(Bootstrap.ja
va:224)
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:289)
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159
)
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:
150)
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwar
eCommand.java:86)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:1
24)
at org.elasticsearch.cli.Command.main(Command.java:90)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115
)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92)

Refer to the log for complete error details.

C:\C\elasticsearch-7.0.0_old\bin>

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