Multiple ERRORs: AttachmentReadException, DataAccessException, ClientAbortException, IOException

[Deleted user]

ERROR [o.a.c.c.C.[.[localhost].[/].[viewattachment]] Servlet.service() for servlet [viewattachment] in context with path [] threw exception [com.atlassian.jira.issue.attachment.AttachmentReadException: com.atlassian.jira.exception.DataAccessException: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Connection reset by peer] with root cause
2019-04-08 11:24:55,815 http-nio-9001-exec-12 ERROR 10410324 684x11607271x1 w7xry2  /secure/attachment/46666/ [c.a.j.web.servlet.ViewAttachmentServlet] Error serving file for path /46666/: com.atlassian.jira.exception.DataAccessException: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Connection reset by peer
2019-04-08 11:16:18,543 http-nio-9001-exec-34 ERROR anonymous 676x11605240x1 yku0ol  /login.jsp [c.a.j.w.f.steps.requestcleanup.WebworkActionCleanupStep] Thread corrupted! ActionContext still references a HttpSession. URL: 'https://system.com/login.jsp' 
2019-04-08 11:13:48,802 http-nio-9001-exec-4 ERROR [o.a.c.c.C.[.[localhost].[/].[viewattachment]] Servlet.service() for servlet [viewattachment] in context with path [] threw exception [com.atlassian.jira.issue.attachment.AttachmentReadException: com.atlassian.jira.exception.DataAccessException: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Connection reset by peer] with root cause

The given ERRORs are shown multiple times in our system. Any ideas why they appear and how to solve this?

[Gonchik Tsymzhitov]

please, checkout that doc https://confluence.atlassian.com/jirakb/clientabortexception-errors-appear-in-jira-server-logs-225122378.html

it's mostly client abortion exception