Does anybody encounter any issues with built-in Streams plugin (Activity stream) in recent Jira releases 11.0.1 & 11.1.0? I’ve faced the issue of the Streams Plugin cannot resolve htttpClient 5. I clearly can see that it’s provided by the System plugin (osgi bundle), and also can confirm that the Streams plugin imports it successfully, but it doesn’t work at all, and I cannot understand why. For example, if you navigate to the summary project page (activity view), then you will get the error
2025-09-26 14:18:51,560+0700 http-nio-2990-exec-10 ERROR [o.a.c.c.C.[.[localhost].[/jira].[servlet-module-container-servlet]] Servlet.service() for servlet [servlet-module-container-servlet] in context with path [/jira] threw exception [Servlet execution threw an exception] with root cause
java.lang.ClassNotFoundException: org.apache.hc.client5.http.classic.HttpClient not found by com.atlassian.streams.core-plugin [166]
2025-09-26 14:18:51,582+0700 http-nio-2990-exec-10 ERROR [c.a.j.web.servlet.InternalServerErrorServlet] {errorId=2c66406d-d805-4b4d-9014-2893dbb383da, interpretedMsg=, cause=java.lang.NoClassDefFoundError: org/apache/hc/client5/http/classic/HttpClient, stacktrace=java.lang.NoClassDefFoundError: org/apache/hc/client5/http/classic/HttpClient
at org.owasp.validator.html.scan.AntiSamyDOMScanner.processAttributes(AntiSamyDOMScanner.java:582) [?:?]
Caused by: java.lang.ClassNotFoundException: org.apache.hc.client5.http.classic.HttpClient not found by com.atlassian.streams.core-plugin [166]
Full stacktrace is very long for this error:
Full stacktrace is very long for this error:
stacktrace.txt (60.1 KB)
Does anybody have any idea? I really need help to address this issue.
