Mvn deploy to nexus fails intermittently with error "nexus failed to respond "

Nexus - 3.33.1 , Intermittent problems when publishing artifacts. Thought artifact is found to be published when check through dashboard. Error on client side is nexus.domain:443 failed to respond.
This is with nexus running in k8s with nginx ingress controller. Any idea how to approach this problem? Below is from nexus logs.

request_id": "e906bb0dd0cd933d345c3d320b66e3c2","proxy_protocol_addr": "x.x.x.x","remote_addr": "x.x.x.x", "proxy_add_x_forwarded_for": "x.x.x.x", "remote_user": "mavenpublish", "time_local": "12/Jan/2022:00:30:28 +0000", "request" : "PUT /repository/maven-snapshots/com/test/order-impl/1.80.0-SNAPSHOT/order-impl-1.80.0-20220112.002928-10-docker-info.jar HTTP/1.1", "status": "408", "body_bytes_sent": "25", "http_referer": "", "http_user_agent": "Apache-Maven/3.6.3 (Java; Linux 5.4.0-1060-aws)", "request_length" : "16880", "request_time" : "60.003", "proxy_upstream_name": "nexus-nexus-8080", "upstream_addr": "", "upstream_response_length": "", "upstream_response_time": "", "upstream_status": ""}2022-01-12 00:37:57,274+0000 DEBUG [qtp1667243825-16272] *UNKNOWN org.apache.shiro.session.mgt.DefaultSessionManager - Unable to resolve session ID from SessionKey [org.apache.shiro.web.session.mgt.WebSessionKey@3e67cf87]. Returning null to indicate a session could not be found.