Please npm ls --production
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Please set env DEBUG=electron-builder* and attach log of the terminal output.
This print helps?

I guess you use some boilerplate and forget to add electron-updater as production dependency. Or somehow else misconfigure electron-builder. Full debug log can help me to understand your project.
The log and package.json are in this link:
https://gist.github.com/fabriciolelis/68bdfc4f28c38bc2d164e19af2ac9141
I cannot help you without project. Is it possible to provide?
Sorry, but I can't do that. Is there other option?
I need only skeleton of project — not actual source files. I see that you provide some extra package file and have some build script to copy the whole app to a new dir. Maybe you need to add electron-update dep to some file, or ... I don't understand structure of your project and, so, cannot advice.
Maybe you need just set your build dir as app directory.
This can help you? If you need more information, you can tell me. Thanks for your help.

Ok, let's guessing :)
What app_package.json does? Maybe you need to add electron-updater as dependency here?
Ouch, I see that "app": "./dist", So, is dist/package.json contains electron-updater?
No, dist/package.json does not contain electron-updater
@fabriciolelis Please answer to https://github.com/electron-userland/electron-builder/issues/1949#issuecomment-323083808 "What app_package.json does? Maybe you need to add electron-updater as dependency here?"
@develar Thanks for your help. I've solved the problem put the dependencies in app_package.json
Cool. Your boilerplate is mysterious for me :)
"devDependencies": {
"electron": "^8.0.0",
"electron-builder": "^22.3.2"
},
"dependencies": {
"electron-log": "^4.0.6",
"electron-updater": "^4.2.0"
}
The processing method must be registered again after deletion.
a) yarn remove electron-updater
b) yarn add electron-updater
Â
This should be added to the "dependencies" section as above.
Most helpful comment
Cool. Your boilerplate is mysterious for me :)