An internal error occurred during: "Initializing Java Tooling".
org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'null' not found. (platform:/resource/WNIS/.settings/org.eclipse.wst.common.component, 2, 60)
An internal error occurred during: "Initializing Java Tooling".
org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'null' not found. (platform:/resource/WNIS/.settings/org.eclipse.wst.common.component, 2, 60)
什么原因啊?
怎么解决啊