"KrbException: Not closed" when using kerberos authentication for the JBoss EAP datasource

Issue

• I have configured kerberos authentication for the datasource and getting the following error:

INFO  [stdout] Debug is  true storeKey false useTicketCache false useKeyTab true doNotPrompt true ticketCache is null isInitiator true KeyTab is /path/to/MyKeytab.keytab refreshKrb5Config is true principal is HTTP/host@MY.DOMAIN tryFirstPass is false useFirstPass is false storePass is false clearPass is false
TRACE [org.jboss.security.negotiation.KerberosLoginModule] (MSC service thread 1-4) Initialised wrapped login module.
TRACE [org.jboss.security.negotiation.KerberosLoginModule] (MSC service thread 1-4) addGssCredential=true
TRACE [org.jboss.security.negotiation.KerberosLoginModule] (MSC service thread 1-4) wrapGssCredential=true
TRACE [org.jboss.security.negotiation.KerberosLoginModule] (MSC service thread 1-4) credentialLifetime=1
INFO  [stdout] (MSC service thread 1-4) Refreshing Kerberos configuration
INFO  [stdout] (MSC service thread 1-4) Java config name: /path/to/krb5.conf
INFO  [stdout] (MSC service thread 1-4) Loading krb5 profile at /path/to/krb5.conf
TRACE [org.jboss.security.negotiation.KerberosLoginModule] (MSC service thread 1-4) Calling wrapped login module to abort.
DEBUG [org.jboss.security] (MSC service thread 1-4) PBOX00206: Login failure: javax.security.auth.login.LoginException: Not closed
    at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:530)
    at org.jboss.security.negotiation@3.0.6.Final-redhat-00001//org.jboss.security.negotiation.KerberosLoginModule.login(KerberosLoginModule.java:190)
    at java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:747)
...
Caused by: KrbException: Not closed
    at java.security.jgss/sun.security.krb5.Config.parseStanzaTable(Config.java:841)
    at java.security.jgss/sun.security.krb5.Config.<init>(Config.java:213)
    at java.security.jgss/sun.security.krb5.Config.refresh(Config.java:151)
    at jdk.security.auth/com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:528)
    ... 29 more