Error Parsing HTTP Header

Hi Guys,

Good Day! I would just like to request for inputs here. When I am running Camunda Platform Run 7.16 docker container, I am encountering this particular error:

2022-05-31 03:50:26.274 INFO 9 — [nio-8443-exec-3] o.apache.coyote.http11.Http11Processor : Error parsing HTTP request header
Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.

java.lang.IllegalArgumentException: Invalid character found in the request target [/index.php?s=/Index/\think\app/invokefunction&function=call_user_func_array&vars[0]=md5&vars[1][]=HelloThinkPHP21 ]. The valid characters are defined in RFC 7230 and RFC 3986
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:494) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:269) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.52.jar!/:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.52.jar!/:na]
at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

Thank you!

does anyone know how to resolve or why this error appears? thanks!

Hi @edcapulong
It looks like the error is self-explanatory. The request contains unsupported characters. You might find this link useful - What is URL Encoding and How does it work? | URLEncoder).

Best regards,
Alex