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当使用ng serve或npm start命令时，显示错误，ng new正在工作。以前它正在工作，但现在不能正常工作，我已经正确安装了nodejs和angular-cli.Thanks提前。 显示的错误是：角度服务不起作用
Cannot read property 'glob' of null
TypeError: Cannot read property 'glob' of null
at ObjectSchemaTreeNode._set (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:224:131)
at new ObjectSchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:209:14)
at OneOfSchemaTreeNode._createChildProperty (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:148:26)
at OneOfSchemaTreeNode._typesPrototype.schema.oneOf.map (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:161:25)
at Array.map (native)
at OneOfSchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:160:48)
at ArraySchemaTreeNode._createChildProperty (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:148:26)
at ArraySchemaTreeNode._set (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:286:39)
at new ArraySchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:267:14)
at ObjectSchemaTreeNode._createChildProperty (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:148:26)
at ObjectSchemaTreeNode._set (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:224:45)
at new ObjectSchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:209:14)
at ArraySchemaTreeNode._createChildProperty (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:148:26)
at ArraySchemaTreeNode._set (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:286:39)
at new ArraySchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:267:14)
at RootSchemaTreeNode._createChildProperty (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:148:26)
at RootSchemaTreeNode._set (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:224:45)
at RootSchemaTreeNode.ObjectSchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:209:14)
at RootSchemaTreeNode (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-tree.js:307:9)
at GeneratedSchemaClass.SchemaClassBase (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-class-factory.js:53:29)
at GeneratedSchemaClass (F:\projects\app1\node_modules\@ngtools\json-schema\src\schema-class-factory.js:144:13)
at new CliConfig (F:\projects\app1\node_modules\@angular\cli\models\config\config.js:18:24)
at Function.fromConfigPath (F:\projects\app1\node_modules\@angular\cli\models\config\config.js:81:16)
at Function.fromProject (F:\projects\app1\node_modules\@angular\cli\models\config.js:90:46)
at Object.<anonymous> (F:\projects\app1\node_modules\@angular\cli\commands\build.js:7:35)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Class.includedCommands (F:\projects\app1\node_modules\@angular\cli\addon\index.js:15:16)
at F:\projects\app1\node_modules\@angular\cli\ember-cli\lib\models\project.js:287:61
at Array.forEach (native)
at Project.addonCommands (F:\projects\app1\node_modules\@angular\cli\ember-cli\lib\models\project.js:286:15)
at Project.eachAddonCommand (F:\projects\app1\node_modules\@angular\cli\ember-cli\lib\models\project.js:321:30)
at module.exports (F:\projects\app1\node_modules\@angular\cli\ember-cli\lib\cli\lookup-command.js:33:13)
at CLI.<anonymous> (F:\projects\app1\node_modules\@angular\cli\ember-cli\lib\cli\cli.js:46:26)
at tryCatch (F:\projects\app1\node_modules\rsvp\dist\rsvp.js:538:12)
at invokeCallback (F:\projects\app1\node_modules\rsvp\dist\rsvp.js:553:13)
at publish (F:\projects\app1\node_modules\rsvp\dist\rsvp.js:521:7)
at flush (F:\projects\app1\node_modules\rsvp\dist\rsvp.js:2373:5)
at _combinedTickCallback (internal/process/next_tick.js:67:7)
at process._tickCallback (internal/process/next_tick.js:98:9)
如何卸载它先生？ –