okex futures interface IO extended for help

In order to read the account privileges of the Okex futures, I wrote exchange.io ((api,POST,/api/V1/future_userinfo_4fix.do); Interface appears to have failed

Return of the error message The request was rejected because the URL was not normalized. The request was rejected because the URL was not normalized. The request was rejected because the URL was not normalized. The request was rejected because the URL was not normalized. The request was rejected because the URL was not normalized. The request was rejected because the URL was not normalized. The request was rejected because the URL was not normalized.\(ConnectionHandler.process(AbstractProtocol.java:790)\n\tat org.apache.tomcat.util.net.NioEndpoint\)SocketProcessor.doRun(NioEndpoint.java:1459)\n\tat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)\n\tat java.util.concurrent.ThreadPoolExecutor\(Worker.run(ThreadPoolExecutor.java:617)\n\tat org.apache.tomcat.util.threads.TaskThread\)WrappingRunnable.run(TaskThread.java:61)\n\tat java.lang.Thread.run(Thread.java:745)\n”,“path”:“/api//V1/future_userinfo_4fix.do”},“detailMsg”:“”,“msg”:“Internal Server Error”}