Springboot项目启动之后过了一段时间之后出现这个错误是怎么回事

Question

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 HTTP protocol at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:532) ~[tomcat-embed-core-9.0.27.jar!/:9.0.27] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:292) ~[tomcat-embed-core-9.0.27.jar!/:9.0.27] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_212] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_212] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_212]