Template processing error on file karma.conf.js

events.js:72
        throw er; // Unhandled 'error' event
              ^
AssertionError: Trying to copy from a source that does not exist: /usr/lib/node_modules/generator-gulp-angular/app/templates/karma.conf.js
    at EditionInterface.exports._copySingle (/usr/lib/node_modules/generator-gulp-angular/node_modules/yeoman-generator/node_modules/mem-fs-editor/actions/copy.js:44:3)
    at EditionInterface.exports.copy (/usr/lib/node_modules/generator-gulp-angular/node_modules/yeoman-generator/node_modules/mem-fs-editor/actions/copy.js:22:17)
    at null.<anonymous> (/usr/lib/node_modules/generator-gulp-angular/app/src/write.js:39:19)
    at Array.forEach (native)
    at writeFiles (/usr/lib/node_modules/generator-gulp-angular/app/src/write.js:33:16)
    at /usr/lib/node_modules/generator-gulp-angular/node_modules/yeoman-generator/lib/base.js:409:16
    at processImmediate [as _immediateCallback] (timers.js:354:15)