[jetty-users] Concurrent timeout exception

[John English <john.foreign@xxxxxxxxx>]

I just saw the following error, which happened to a user yesterday 
afternoon and was emailed to me automatically:

org.eclipse.jetty.io.RuntimeIOException: java.io.IOException: 
java.util.concurrent.TimeoutException: Idle timeout expired: 30001/30000 ms
at org.eclipse.jetty.server.Request.extractFormParameters(Request.java:587)
at 
org.eclipse.jetty.server.Request.extractContentParameters(Request.java:531)
at org.eclipse.jetty.server.Request.getParameters(Request.java:435)
at org.eclipse.jetty.server.Request.getParameter(Request.java:1075)
at ...

Can anyone tell me what this means and what might be causing it? (I'm 
using Jetty 9.4.41.)

--
John English