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org.eclipse.core.runtime.CoreException: Cannot modify a deleted project. at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.validateNotDeleted(FacetedProject.java:1863) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.setTargetedRuntimesInternal(FacetedProject.java:673) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChangesInternal(FacetedProject.java:1161) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.access$2(FacetedProject.java:1117) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject$5.run(FacetedProject.java:1099) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2241) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChanges(FacetedProject.java:1109) at org.eclipse.wst.common.project.facet.core.internal.FacetedProjectWorkingCopy.commitChanges(FacetedProjectWorkingCopy.java:2020) at org.eclipse.wst.jsdt.web.core.internal.project.ConvertJob.runInWorkspace(ConvertJob.java:66) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:39) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)