在netbean中添加了python插件后,就再打不开了。出错提示如下:Warning - could not install some modules: Hudson - The module named org.netbeans.modules.gsf.testrunner was needed and not found. JUnit 测试 - The module named org.netbeans.modules.gsf.testrunner was needed and not found. 12 further modules could not be installed due to the above problems.是什么原因呢?