NetWorker: External User Accounts fail with HTTP 404 after Upgrading to NetWorker 19.13

The following error is observed while accessing the NetWorker Management Console (NMC) as an external user account:

The same error is observed while performing nsrlogin as an external user: nsrlogin -t TENANT_NAME -d DOMAIN_NAME -u USER_NAME

admin@nve:/root> /usr/sbin/nsrlogin -t default -d networker.lan -u bkupadmin
130136:nsrlogin: Please enter password:
117849:nsrlogin: Authentication library error: POST failed with HTTP-ERROR: 404
Server Message : Could not parse server-response from json string

The NetWorker Web User Interface (NWUI) reports that the user cannot be authenticated:

The following error is observed in the NetWorker authentication (AUTHC) server's catalina.log.0:

Linux: /nsr/authc/logs/catalina.log.0
Windows (Default): C:\Program Files\EMC NetWorker\nsr\authc-server\tomcat\logs\catalina.log.0

MONTH DD, YYYY HH:MM:SS org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [api-latest] in context with path [/auth-server] threw exception [Filter execution threw an exception] with root cause
java.lang.NoSuchMethodError: 'void org.springframework.util.Assert.isTrue(boolean)'
    at org.springframework.ldap.support.LdapUtils$CollectingAttributeValueCallbackHandler.handleAttributeValue(LdapUtils.java:343)
    at org.springframework.ldap.support.LdapUtils.handleAttributeValue(LdapUtils.java:321)
    at org.springframework.ldap.support.LdapUtils.iterateAttributeValues(LdapUtils.java:305)
    at org.springframework.ldap.support.LdapUtils.collectAttributeValues(LdapUtils.java:287)

...

Local NetWorker user accounts such as the "Administrator" authenticate within NetWorker command-line and UIs without issue.

The underlying condition appears due to many changes which occurred in NetWorker 19.13.0.0 with Java and Spring Framework.

Code defect NETWORKER-120431.

This issue is addressed in 19.13.0.1. Upgrade to 19.13.0.1 (or later) for a code fix.

Workaround:
Use local NetWorker user accounts (such as the default Administrator account) until the code fix is applied

If you are using "AD over SSL" (LDAPS) ensure that the "Is Active Directory" setting is properly applied: NetWorker: AD over SSL (LDAPS) NetWorker Login Fails With HTTP 404 or HTTP 500