KeyStoreException: Cannot store non-PrivateKeys

java.lang.RuntimeException: org.wildfly.security.credential.store.CredentialStoreException: ELY09508: Cannot write credential to store
	at org.infinispan.server.configuration.ServerConfigurationParserTest.addCredential(ServerConfigurationParserTest.java:468)
	at org.infinispan.server.configuration.ServerConfigurationParserTest.createCredentialStore(ServerConfigurationParserTest.java:496)
	at org.infinispan.server.configuration.ServerConfigurationParserTest.setUp(ServerConfigurationParserTest.java:65)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:61)
	at org.junit.internal.runners.statements.RunBefores.invokeMethod(RunBefores.java:33)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.infinispan.commons.test.junit.JUnitThreadTrackerRule$1.evaluate(JUnitThreadTrackerRule.java:26)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.apache.maven.surefire.junitcore.pc.Scheduler$1.run(Scheduler.java:405)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.wildfly.security.credential.store.CredentialStoreException: ELY09508: Cannot write credential to store
	at org.wildfly.security.credential.store.impl.KeyStoreCredentialStore.store(KeyStoreCredentialStore.java:412)
	at org.infinispan.server.configuration.ServerConfigurationParserTest.addCredential(ServerConfigurationParserTest.java:465)
	... 24 more
Caused by: java.security.KeyStoreException: Cannot store non-PrivateKeys
	at sun.security.provider.JavaKeyStore.engineSetKeyEntry(JavaKeyStore.java:263)
	at sun.security.provider.JavaKeyStore$JKS.engineSetKeyEntry(JavaKeyStore.java:57)
	at java.security.KeyStoreSpi.engineSetEntry(KeyStoreSpi.java:550)
	at sun.security.provider.KeyStoreDelegator.engineSetEntry(KeyStoreDelegator.java:179)
	at sun.security.provider.JavaKeyStore$DualFormatJKS.engineSetEntry(JavaKeyStore.java:71)
	at java.security.KeyStore.setEntry(KeyStore.java:1557)
	at org.wildfly.security.credential.store.impl.KeyStoreCredentialStore.store(KeyStoreCredentialStore.java:391)
	... 25 more