Prepare-offline-pack subcommand ERROR

HI,when i install logstash offline plugins,I get this error:
my server can not connect internet,so,i build my offline plugin pack in my another server that can connect internet.
[root@logstash7 bin]# ./logstash-plugin install /home/
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
Validating /home/
Unable to download data from - SocketError: Failed to open TCP connection to (initialize: name or service not known) (
ERROR: Installation aborted, verification failed for /home/

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