Hi,

I encountered and error in OMADA controller OC200. I could not print created vouchers as I encountered an error when I am about to print them:

HTTP Status 400 – Bad Request

Type Exception Report

Message Invalid character found in the request target [/omada/3.2.3/hotspot/static/printVoucher.html?type=include&id[]=60006793ded39a066906e793&id[]=60006793ded39a066906e7b0&id[]=60006793ded39a066906e7b3&id[]=60a9a6f2ded39a0669ebc360&id[]=60a9a6f2ded39a0669ebc361&id[]=60a9a6f2ded39a0669ebc362&id[]=60a9a6f2ded39a0669ebc363&id[]=60a9a6f2ded39a0669ebc364&id[]=60a9a6f2ded39a0669ebc365&id[]=60a9a6f2ded39a0669ebc366&id[]=60a9a6f2ded39a0669ebc367&id[]=60a9a6f2ded39a0669ebc368&id[]=60a9a6f2ded39a0669ebc369&token=2c0cd1ba3be04541a86e66647f0f8d93&serverKey=15F3D81293D89A59B4D213FD44C5100FC215EBFF]. The valid characters are defined in RFC 7230 and RFC 3986

Description The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

Exception

java.lang.IllegalArgumentException: Invalid character found in the request target [/omada/3.2.3/hotspot/static/printVoucher.html?type=include&id[]=60006793ded39a066906e793&id[]=60006793ded39a066906e7b0&id[]=60006793ded39a066906e7b3&id[]=60a9a6f2ded39a0669ebc360&id[]=60a9a6f2ded39a0669ebc361&id[]=60a9a6f2ded39a0669ebc362&id[]=60a9a6f2ded39a0669ebc363&id[]=60a9a6f2ded39a0669ebc364&id[]=60a9a6f2ded39a0669ebc365&id[]=60a9a6f2ded39a0669ebc366&id[]=60a9a6f2ded39a0669ebc367&id[]=60a9a6f2ded39a0669ebc368&id[]=60a9a6f2ded39a0669ebc369&token=2c0cd1ba3be04541a86e66647f0f8d93&serverKey=15F3D81293D89A59B4D213FD44C5100FC215EBFF]. The valid characters are defined in RFC 7230 and RFC 3986
	org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:490)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:261)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

Note The full stack trace of the root cause is available in the server logs.

Apache Tomcat/9.0.41

For your immediate assistance please.

Thanks!