Elasticsearch is unable to start

[BryBoyer]

Hello,

I am trying a new install on a raspberry pi 4 running DietPi 8.24.1
When running setup.sh, it will try to start Elasticsearch but fail. The output is below. Attempting to run Elasticsearch by itself will also fail similarly. Any suggestions?
Thanks

Starting Elasticsearch 5.3.3
OpenJDK Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.

Waiting for Elasticsearch on port 20724 ...
...............................TIMEOUT - process took too long!
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DONE.
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Press any key to continue (CTRL+C to exit)