Same issue here plus sintax error.
How can I fix this?
$ npm run gulp start
gravit-designer-plugin-starter@1.0.0 gulp /Users/huse/Documents/2018/gravit-designer-plugin2
gulp “start”
[21:30:38] Using gulpfile ~/Documents/2018/gravit-designer-plugin2/gulpfile.js
[21:30:38] Starting ‘start’…
[21:30:38] Finished ‘start’ after 15 ms
[2018-02-14T02:30:38.121Z] [electron-connect] [server] started electron process: 580
[2018-02-14T02:30:38.121Z] [electron-connect] [server] server created and listening on 30080
App threw an error during load
/Users/huse/Documents/2018/gravit-designer-plugin2/node_modules/gravit-designer:1
(function (exports, require, module, __filename, __dirname, process, global, Buffer) { return function (exports, require, module, __filename, __dirname) { PK
^
SyntaxError: Invalid or unexpected token
at createScript (vm.js:74:10)
at Object.runInThisContext (vm.js:116:10)
at Module._compile (module.js:533:28)
at Object.Module._extensions…js (module.js:580:10)
at Module.load (module.js:503:32)
at tryModuleLoad (module.js:466:12)
at Function.Module._load (module.js:458:3)
at loadApplicationPackage (/Users/huse/Documents/2018/gravit-designer-plugin2/node_modules/electron/dist/Electron.app/Contents/Resources/default_app.asar/main.js:287:12)
at Object. (/Users/huse/Documents/2018/gravit-designer-plugin2/node_modules/electron/dist/Electron.app/Contents/Resources/default_app.asar/main.js:329:5)
at Object. (/Users/huse/Documents/2018/gravit-designer-plugin2/node_modules/electron/dist/Electron.app/Contents/Resources/default_app.asar/main.js:366:3)