error with online plant uml

Question

Hello
I copy my plantUml file on website, but i encounter following error message ?
Why, ?

how can i  solve problem ?

Regards

java.lang.IllegalArgumentException: Request header is too large
    org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:778)
    org.apache.coyote.http11.Http11InputBuffer.parseHeader(Http11InputBuffer.java:972)
    org.apache.coyote.http11.Http11InputBuffer.parseHeaders(Http11InputBuffer.java:593)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:279)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:937)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
    org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190)
    org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
    java.base/java.lang.Thread.run(Thread.java:829)

Answer 1

Well, what do you copy and where exactly? How big is the diagram text? Have you tried the command-line version plantuml.jar?

We cannot debug a problem with insufficient details.