Java NetCAD无法加载资源错误jnlp

我是一名学生，在从NetCAD网站打开check jnlp文件时遇到问题。它给了我以下的错误

com.sun.deploy.net.faileddownloadexception: unable to load resource: http://localhost/check/pt-assessment-client.jnlp

at com.sun.deploy.net.downloadengine.actiondownload(unknown source)
at com.sun.deploy.net.downloadengine.downloadresource(unknown source)
at com.sun.deploy.cache.resourceproviderimpl.getresource(unknown source)
at com.sun.deploy.cache.resourceproviderimpl.getresource(unknown source)
at com.sun.javaws.launcher.updatefinallaunchdesc(unknown source)
at com.sun.javaws.launcher.preparetolaunch(unknown source)
at com.sun.javaws.launcher.preparetolaunch(unknown source)
at com.sun.javaws.launcher.launch(unknown source)
at com.sun.javaws.main.launchapp(unknown source)
at com.sun.javaws.main.continueinsecurethread(unknown source)
at com.sun.javaws.main.access$000(unknown source)
at com.sun.javaws.main$1.run(unknown source) 
at java.lang.thread.run(unknown source)

或者根本就没有启动

我尝试过更新我的java并尝试过以前的版本。我还试图删除广告拦截器，并停止我的防病毒，但无济于事

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有没有办法解决这个问题？

什么是“NetCAD”网站，如果您试图从NetCAD下载它，为什么堆栈跟踪会提到

localhost

？哦，DYM？注意：1）它不在本地服务器（localhost）上，因此需要完整的URL）2）URL区分大小写，因此在适当的情况下使用大写。