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TypeError: Cannot read property 'version' of null

See original GitHub issue

Hello all, I’ve been getting this error lately when opening/saving ts files :

Search path: /Users/julien/Documents/web/faucon-rouge/client/apps/front-app/src/app/pages/articles-page
Failed to read JSON file /Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/common/locales/fr.metadata.json
Config file name: /Users/julien/Documents/web/faucon-rouge/client/tsconfig.json
Angular Language Service: 5.0.1
TypeScript: 2.4.2
Error for getTemplateRefrences:
    TypeError: Cannot read property 'version' of null
    at readMetadataFile (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:38646:28)
    at readMetadata (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:38615:25)
    at ReflectorHost.getMetadataFor (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:56526:16)
    at StaticSymbolResolver.getModuleMetadata (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:31804:62)
    at StaticSymbolResolver.hasDecorators (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:31531:46)
    at analyzeFile (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:30078:63)
    at visitFile (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:30057:45)
    at /Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:30063:52
    at Array.forEach (native)
    at _analyzeFilesIncludingNonProgramFiles (/Users/julien/Documents/web/faucon-rouge/client/node_modules/@angular/language-service/bundles/language-service.umd.js:30063:15)
getTemplateRefrences: 367ms
SERVER ERROR: Cannot read property 'length' of null
TypeError: Cannot read property 'length' of null
    at Project.updateFileMap (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/editorServices.js:797:94)
    at Project.updateGraph (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/editorServices.js:815:14)
    at Project.finishGraph (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/editorServices.js:807:14)
    at ProjectService.openConfigFile (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/editorServices.js:1634:17)
    at ProjectService.openOrUpdateConfiguredProjectForFile (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/editorServices.js:1486:41)
    at ProjectService.openClientFile (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/editorServices.js:1404:23)
    at /Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/documents.js:135:47
    at TextDocuments.logErrors (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/documents.js:235:13)
    at /Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/documents.js:131:74
    at handleNotification (/Users/julien/.vscode/extensions/Angular.ng-template-0.1.7/server/node_modules/vscode-jsonrpc/lib/main.js:353:21)
[Error - 23:07:46] Notification handler 'textDocument/didOpen' failed with message: Cannot read property 'length' of null