Hello, i have the same problem. I also get a white-screen. My error-log:

$ tail -f /home/pi/.pm2/logs/mm-error-0.log

at Error (native)
at process.module.(anonymous function) [as dlopen] (ELECTRON_ASAR.js:178:20)
at Object.Module._extensions..node (module.js:583:18)
at Object.module.(anonymous function) [as .node] (ELECTRON_ASAR.js:178:20)
at Module.load (module.js:473:32)
at tryModuleLoad (module.js:432:12)
at Function.Module._load (module.js:424:3)
at Module.require (module.js:483:17)
at require (internal/module.js:20:19)
at bindings (/home/pi/MagicMirror/modules/MMM-Button/node_modules/bindings/bindings.js:76:44)

Any Ideas? Thanks!
I’ve done everything which was postet in this topic…