[aspnet-webpack] invalid argument since 1.0.19 #408

Hi im getting the following error since updating to 1.0.19 before it was fine.

the path which causes the problem is \wwwroot

Microsoft.AspNetCore.NodeServices: Error: Unhandled rejection Error: invalid argument
at pathToArray (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\memory-fs\lib\MemoryFileSystem.js:44:10)
at MemoryFileSystem.meta (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\memory-fs\lib\MemoryFileSystem.js:61:13)
at MemoryFileSystem.statSync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\memory-fs\lib\MemoryFileSystem.js:76:21)
at D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\aspnet-webpack\WebpackDevMiddleware.js:97:33
at Array.forEach (native)
at copyRecursiveSync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\aspnet-webpack\WebpackDevMiddleware.js:93:31)
at Compiler. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\aspnet-webpack\WebpackDevMiddleware.js:79:9)
at Compiler.applyPlugins (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:26:37)
at Watching._done (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:78:17)
at Watching. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:61:18)
at Compiler.emitRecords (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:282:37)
at Watching. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:58:19)
at D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:275:11
at Compiler.applyPluginsAsync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:60:69)
at Compiler.afterEmit (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:272:8)
at Compiler. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:267:14)
From previous event:
at Compiler. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\html-webpack-plugin\index.js:197:15)
at Compiler.applyPluginsAsync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:71:13)
at Compiler.emitAssets (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:226:7)
at Watching. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:54:18)
at D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:403:12
at Compiler.next (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:67:11)
at Compiler. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\awesome-typescript-loader\src\instance.ts:471:9)
at Compiler.next (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:69:14)
at Compiler. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\CachePlugin.js:40:4)
at Compiler.applyPluginsAsync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:71:13)
at Compiler. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compiler.js:400:9)
at Compilation. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compilation.js:577:13)
at Compilation.applyPluginsAsync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:60:69)
at Compilation. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compilation.js:572:10)
at Compilation.applyPluginsAsync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:60:69)
at Compilation. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compilation.js:567:9)
at Compilation.applyPluginsAsync (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\tapable\lib\Tapable.js:60:69)
at Compilation. (D:\Repositories\Maintenance Web App\src\Maintenance.Web\node_modules\webpack\lib\Compilation.js:563:8)