gistfile1.txt

Error: Invalid path
    at pathToArray (/my-proj-path/node_modules/webpack-dev-server/node_modules/webpack-dev-middleware/node_modules/memory-fs/lib/MemoryFileSystem.js:24:38)
    at MemoryFileSystem.mkdirpSync (/my-proj-path/node_modules/webpack-dev-server/node_modules/webpack-dev-middleware/node_modules/memory-fs/lib/MemoryFileSystem.js:108:13)
    at MemoryFileSystem.(anonymous function) [as mkdirp] (/my-proj-path/node_modules/webpack-dev-server/node_modules/webpack-dev-middleware/node_modules/memory-fs/lib/MemoryFileSystem.js:188:34)
    at Tapable.<anonymous> (/my-proj-path/node_modules/webpack/lib/Compiler.js:225:25)
    at Tapable.applyPluginsAsync (/my-proj-path/node_modules/webpack/node_modules/tapable/lib/Tapable.js:60:69)
    at Tapable.Compiler.emitAssets (/my-proj-path/node_modules/webpack/lib/Compiler.js:222:7)
    at Watching.<anonymous> (/my-proj-path/node_modules/webpack/lib/Compiler.js:53:18)
    at /my-proj-path/node_modules/webpack/lib/Compiler.js:397:12
    at Tapable.next (/my-proj-path/node_modules/webpack/node_modules/tapable/lib/Tapable.js:69:11)
    at CachePlugin.<anonymous> (/my-proj-path/node_modules/webpack/lib/CachePlugin.js:40:4)