Authentication failing in kubernetes cluster deployment

I have set up my yaml file based on the deployment example. When I start up couchbase, and try to access it, I am getting the following:
{"@timestamp":“2021-06-16T16:21:01.428Z”,"@version":“1”,“message”:"[com.couchbase.io][SaslAuthenticationFailedEvent][704ms] Authentication Failure - Potential causes: invalid credentials or if LDAP is enabled ensure PLAIN SASL mechanism is exclusively used on the PasswordAuthenticator (insecure) or TLS is used (recommended) {“circuitBreaker”:“DISABLED”,“coreId”:“0x517bcc9700000001”,“remote”:“clustertest-srv:11210”,“status”:“UNKNOWN”,“type”:“KV”,“xerror”:{“ref”:“e64648ba-a8cc-4233-a297-a30893aefb6b”}}",“logger_name”:“com.couchbase.io”,“thread_name”:“cb-events”,“level”:“ERROR”,“level_value”:40000}

{"@timestamp":“2021-06-16T16:21:01.430Z”,"@version":“1”,“message”:"[com.couchbase.io][SaslAuthenticationFailedEvent][710ms] Authentication Failure - Potential causes: invalid credentials or if LDAP is enabled ensure PLAIN SASL mechanism is exclusively used on the PasswordAuthenticator (insecure) or TLS is used (recommended) {“bucket”:“buckettest”,“circuitBreaker”:“DISABLED”,“coreId”:“0x517bcc9700000001”,“remote”:“clustertest-srv:11210”,“status”:“UNKNOWN”,“type”:“KV”,“xerror”:{“ref”:“f0a0eff9-dc5a-48a0-f99d-3aec39c570fc”}}",“logger_name”:“com.couchbase.io”,“thread_name”:“cb-events”,“level”:“ERROR”,“level_value”:40000}

{"@timestamp":“2021-06-16T16:21:01.433Z”,"@version":“1”,“message”:"[com.couchbase.endpoint][EndpointConnectionFailedEvent][1596ms] Connect attempt 1 failed because of AuthenticationFailureException: Authentication Failure - Potential causes: invalid credentials or if LDAP is enabled ensure PLAIN SASL mechanism is exclusively used on the PasswordAuthenticator (insecure) or TLS is used (recommended) {“circuitBreaker”:“DISABLED”,“coreId”:“0x517bcc9700000001”,“remote”:“clustertest-srv:11210”,“type”:“KV”}",“logger_name”:“com.couchbase.endpoint”,“thread_name”:“cb-events”,“level”:“WARN”,“level_value”:30000,“stack_trace”:“com.couchbase.client.core.error.AuthenticationFailureException: Authentication Failure - Potential causes: invalid credentials or if LDAP is enabled ensure PLAIN SASL mechanism is exclusively used on the PasswordAuthenticator (insecure) or TLS is used (recommended)\n\tat com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.failConnect(SaslAuthenticationHandler.java:486)\n\tat com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.maybeFailConnect(SaslAuthenticationHandler.java:294)\n\tat com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.channelRead(SaslAuthenticationHandler.java:251)\n\tat com.couchbase.client.core.io.netty.kv.MemcacheProtocolVerificationHandler.channelRead(MemcacheProtocolVerificationHandler.java:85)\n\tat java.base/java.lang.Thread.run(Thread.java:834)\n”}

The is running on a MAC. I have checked the base64 encoding of the username and password. I don’t believe LDAP is on, this may be a TLS issue. If it is, not sure what I need to do.