sym 后台报错：java.lang.IllegalArgumentException: The character [3] is not valid after a period in a domain name

1，拉取最新版本，仍然经常报下面的错误：

java.lang.IllegalArgumentException: The character [3] is not valid after a period in a domain name

2，详细异常信息如下：

org.apache.coyote.http11.Http11Processor.parseHost The host header [www. 域名.com:8080] failed validation with the error [The character [3] is not valid after a period in a domain name.]. Processing of the request will continue but Tomcat will reject these requests with a 400 response in a future release.
 Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
 java.lang.IllegalArgumentException: The character [3] is not valid after a period in a domain name.
        at org.apache.tomcat.util.http.parser.HttpParser$DomainParseState.next(HttpParser.java:725)
        at org.apache.tomcat.util.http.parser.HttpParser.readHostDomainName(HttpParser.java:657)
        at org.apache.tomcat.util.http.parser.Host.parse(Host.java:69)
        at org.apache.tomcat.util.http.parser.Host.parse(Host.java:42)
        at org.apache.coyote.http11.Http11Processor.parseHost(Http11Processor.java:1111)
        at org.apache.coyote.http11.Http11Processor.prepareRequest(Http11Processor.java:855)
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:476)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Thread.java:745)