i have some trouble error in win7

[buzai]

node 6.2.0 win7

to do with your youtube but when this error ,i cant fix it, can you help me, i have waste three day to fix it . i google some method. but cant fix it , also change some error info.

ERROR in multi main Module not found: Error: Cannot resolve 'file' or 'directory' ./src in C:\Users
chenhao\Desktop\code\mean\app @ multi main

[106] ./src/todos/todos.html 1.21 kB {0} [built] [107] ./src/about/about.html 110 bytes {0} [built]

ERROR in ./src/index.js Module not found: Error: Cannot resolve module 'css/master.scss' in C:\Users\che nhao\Desktop\code\mean\src @ ./src/index.js 11:0-26 webpack: bundle is now VALID.