How to create a production build in Electron

I am getting this issue, related to the configuration I think:

"build": {
"appId": "com.sws.app",
"files": [
  "app/**/*",
  "node_modules/**/*",
  "package.json"
],
"directories": {
  "buildResources": "resources"
},
"extraFiles": [
  "credentials"
],
"publish": null
}

How can I check my build configuration and discover what the issue is?