What to do if you get further occurrences of http header parsing errors will be logged at debug level. In tomcat 8.5.37

It was when I was developing a Servlet using Tomcat 8.5.37. Suddenly

note: further occurrences of http header parsing errors will be logged at debug level. java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:428) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:684) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocolConnectionHandler.process(AbstractProtocol.java:806) at org.apache.tomcat.util.net.NioEndpointSocketProcessor.doRun(NioEndpoint.java:1498) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutorWorker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThreadWrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

Error occurred. At that time https://localhost:8080/プロジェクト名 I was accessing it with, but I solved it by changing this to http: //.

reference: https://stackoverflow.com/questions/42218237/java-lang-illegalargumentexception-invalid-character-found-in-method-name-http

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