v2.15.0-161.vb_200831a_c15b_ works perfectly fine. Updating to 2.16.0-167.va_269f38cc024 results in the following error when trying to establish connection to new agent:

"Unable to check the server key Exception: java.lang.IllegalArgumentException: keyInfoData array empty"

Other information:

• Host Key Verification Strategy set to off

Full stack trace

java.lang.IllegalArgumentException: keyInfoData array empty
at PluginClassLoader for bouncycastle-api//org.bouncycastle.crypto.util.PublicKeyFactory.createKey(Unknown Source)
at PluginClassLoader for ec2//hudson.plugins.ec2.ssh.EC2SSHLauncher$ServerKeyVerifierImpl.verifyServerKey(EC2SSHLauncher.java:401)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.client.session.AbstractClientSession.checkKeys(AbstractClientSession.java:620)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSession.handleKexMessage(AbstractSession.java:776)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:631)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSession.lambda$handleMessage$0(AbstractSession.java:555)
at PluginClassLoader for mina-sshd-api-common//org.apache.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:68)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:554)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1738)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:515)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:76)
at PluginClassLoader for mina-sshd-api-core//org.apache.sshd.mina.MinaService.messageReceived(MinaService.java:163)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:1015)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:650)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300(DefaultIoFilterChain.java:49)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:1128)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:122)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:650)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:643)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:539)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.polling.AbstractPollingIoProcessor.access$1200(AbstractPollingIoProcessor.java:68)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.process(AbstractPollingIoProcessor.java:1224)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.process(AbstractPollingIoProcessor.java:1213)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:683)
at PluginClassLoader for mina-sshd-api-core//org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)