java.lang.IllegalArgumentException

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This error is caused by malformed HTTP request. You are trying to access unsecured page through https.


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Some bots are sending malformed HTTP requests to your site. Try to find their IP addresses in the access logs and ask them to fix the bots or blacklist them.


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    • java.lang.IllegalArgumentException: Request header is too large at org.apache.coyote.http11.InternalAprInputBuffer.fill(InternalAprInputBuffer.java:574) at org.apache.coyote.http11.InternalAprInputBuffer.parseRequestLine(InternalAprInputBuffer.java:217) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:996) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2517) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2506) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:722)

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