我从第三方工具生成了一个战争文件。在 Eclipse 2020-06 中导入此 war 文件时，导入失败并出现以下错误：我已更新 eclipse.ini 文件以指向我系统中的 Open JDK。此外，当我在 Eclipse Neon 中导入它时，完全没有问题。
抛出的错误是：
Extended Operation failure: org.eclipse.jst.j2ee.internal.web.archive.operations.WebComponentImportOperation
org.eclipse.core.commands.ExecutionException: Error importing Module File
at org.eclipse.jst.j2ee.internal.archive.operations.J2EEArtifactImportOperation.doExecute(J2EEArtifactImportOperation.java:89)
at org.eclipse.jst.j2ee.internal.web.archive.operations.WebComponentImportOperation.doExecute(WebComponentImportOperation.java:70)
at org.eclipse.jst.j2ee.internal.archive.operations.J2EEArtifactImportOperation.execute(J2EEArtifactImportOperation.java:57)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl$1.run(DataModelPausibleOperationImpl.java:385)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2292)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2317)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(DataModelPausibleOperationImpl.java:410)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(DataModelPausibleOperationImpl.java:360)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.doExecute(DataModelPausibleOperationImpl.java:247)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.executeImpl(DataModelPausibleOperationImpl.java:219)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.cacheThreadAndContinue(DataModelPausibleOperationImpl.java:89)
at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.execute(DataModelPausibleOperationImpl.java:207)
at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard$1CatchThrowableRunnableWithProgress.run(DataModelWizard.java:220)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
Caused by: org.eclipse.wst.common.frameworks.internal.enablement.nonui.WFTWrappedException: Error importing Module File
at org.eclipse.jst.j2ee.internal.archive.operations.J2EEArtifactImportOperation.importModuleFile(J2EEArtifactImportOperation.java:127)
at org.eclipse.jst.j2ee.internal.archive.operations.J2EEArtifactImportOperation.doExecute(J2EEArtifactImportOperation.java:87)
... 13 more
Caused by: java.lang.NullPointerException
at org.eclipse.jst.j2ee.internal.archive.ComponentArchiveSaveAdapter.<init>(ComponentArchiveSaveAdapter.java:73)
at org.eclipse.jst.j2ee.internal.archive.J2EEComponentArchiveSaveAdapter.<init>(J2EEComponentArchiveSaveAdapter.java:43)
at org.eclipse.jst.j2ee.internal.archive.WebComponentArchiveSaveAdapter.<init>(WebComponentArchiveSaveAdapter.java:35)
at org.eclipse.jst.j2ee.internal.web.archive.operations.WebComponentImportOperation.getArchiveSaveAdapter(WebComponentImportOperation.java:130)
at org.eclipse.jst.j2ee.internal.archive.operations.J2EEArtifactImportOperation.importModuleFile(J2EEArtifactImportOperation.java:120)
... 14 more
关于为什么会发生这种情况的任何指导！