First, I’m sorry.
I can not speak English very well.
It depends on google translator.

I do not use Raspberry Pi, but I tried several things because I wanted to use MM.

After installing ubuntu 16.04 on vmware workstation, it worked successfully after installing MM.
And odrold-ux4 succeeded and succeeded in artik530.

After finishing the practice, I tried to install MM on artik710s and I failed.

The problem is that the artik710s is arm64, although it is not accurate because it does not have expertise.

In this regard, I wrote here.
https://forum.magicmirror.builders/topic/6926/mm-installation-error-by-electron-arm64

With my short knowledge, I think it would be possible to change the package below.

electron version
The package has an arm64 package starting at 1.8 or higher. Spectron version
The electron-chromedriver package is installed with the spectron 3.7.x version.
The electron-chromedriver also has an arm64 package starting at 1.8 or higher.
The electron-chromedriver 1.8 package is installed with the spectron 3.8.0 version.

I tried.
Remove the package-lock.json file
The package.json file was modified.

"spectron": "3.7.x", -> "spectron": "3.8.0"  "electron": "^ 1.4.15", -> "electron": "1.8.4"

And when I did npm install and npm start, I could see the black screen.

I know this project is Raspberry Pi, but I hope to use the two updated packages mentioned above in the next version.

Thank you.

Did you ever fix this? I am running into the same issue.