Tomcat reported an error when parsing HTTP request and returned the error to the client. The specific error is as follows:

 org.apache.coyote.http11.AbstractHttp11Processor.process Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.

The reason for the error is that the amount of data carried by the URL link header file is too large. You only need to modify the server.xml Change maxhttpheadersize to a larger value. It is shown as follows: