Cassandra 3.11.2 startup returning ConfigurationException "Unable to find authenticator class 'com.datastax.bdp.cassandra.auth.PasswordAuthenticator'"

Exception (org.apache.cassandra.exceptions.ConfigurationException) encountered during startup: Unable to find authenticator class 'com.datastax.bdp.cassandra.auth.PasswordAuthenticator'
Caused by: java.lang.ClassNotFoundException: com.datastax.bdp.cassandra.auth.PasswordAuthenticator
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:556)
        ... 8 more
ERROR [main] 2023-02-21 14:22:24,788 CassandraDaemon.java:803 - Exception encountered during startup
org.apache.cassandra.exceptions.ConfigurationException: Unable to find authenticator class 'com.datastax.bdp.cassandra.auth.PasswordAuthenticator'
        at org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:560)
        at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:593)
        at org.apache.cassandra.utils.FBUtilities.newAuthenticator(FBUtilities.java:536)
        at org.apache.cassandra.auth.AuthConfig.applyAuth(AuthConfig.java:53)
        at org.apache.cassandra.config.DatabaseDescriptor.daemonInitialization(DatabaseDescriptor.java:154)
        at org.apache.cassandra.config.DatabaseDescriptor.daemonInitialization(DatabaseDescriptor.java:137)
        at org.apache.cassandra.service.CassandraDaemon.applyConfig(CassandraDaemon.java:680)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:622)
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:786)
Caused by: java.lang.ClassNotFoundException: com.datastax.bdp.cassandra.auth.PasswordAuthenticator
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:556)
        ... 8 common frames omitted