Hello guys, i hope someone can help me here. I found several people with the same problem but all got fixed by the Troubleshooting in the README, mine doesnt (or maybe i did something wrong?!)

My problem is this error:

Error: Failed to load gRPC binary module because it was not installed for the current system
Expected directory: electron-v3.1-linux-arm-glibc
Found: [node-v72-linux-arm-glibc]

Full start sequence log:

pi@InfoDisplayPi:~/MagicMirror $ npm start

> magicmirror@2.8.0 start /home/pi/MagicMirror
> sh run-start.sh

Starting MagicMirror: v2.8.0
Loading config ...
Loading module helpers ...
No helper found for module: alert.
Initializing new module helper ...
Module helper loaded: updatenotification
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: calendar
No helper found for module: compliments.
No helper found for module: currentweather.
No helper found for module: weatherforecast.
Initializing new module helper ...
Module helper loaded: newsfeed
WARNING! Could not load config file. Starting with default configuration. Error found: Error: Failed to load gRPC binary module because it was not installed for the current system
Expected directory: electron-v3.1-linux-arm-glibc
Found: [node-v72-linux-arm-glibc]
This problem can often be fixed by running "npm rebuild" on the current system
Original error: Cannot find module '/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/node/extension_binary/electron-v3.1-linux-arm-glibc/grpc_node.node'
Loading module helpers ...
No helper found for module: alert.
Initializing new module helper ...
Module helper loaded: updatenotification
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: calendar
No helper found for module: compliments.
No helper found for module: currentweather.
No helper found for module: weatherforecast.
Initializing new module helper ...
Module helper loaded: newsfeed
App threw an error during load
Error: Failed to load gRPC binary module because it was not installed for the current system
Expected directory: electron-v3.1-linux-arm-glibc
Found: [node-v72-linux-arm-glibc]
This problem can often be fixed by running "npm rebuild" on the current system
Original error: Cannot find module '/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/node/extension_binary/electron-v3.1-linux-arm-glibc/grpc_node.node'
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/grpc_extension.js:53:17)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/grpc_extension.js:64:3)
    at Module._compile (internal/modules/cjs/loader.js:711:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:722:10)
    at Module.load (internal/modules/cjs/loader.js:620:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:559:12)
    at Function.Module._load (internal/modules/cjs/loader.js:551:3)
    at Module.require (internal/modules/cjs/loader.js:658:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/client_interceptors.js:144:12)
Whoops! There was an uncaught exception...
{ Error: Failed to load gRPC binary module because it was not installed for the current system
Expected directory: electron-v3.1-linux-arm-glibc
Found: [node-v72-linux-arm-glibc]
This problem can often be fixed by running "npm rebuild" on the current system
Original error: Cannot find module '/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/node/extension_binary/electron-v3.1-linux-arm-glibc/grpc_node.node'
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/grpc_extension.js:53:17)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/grpc_extension.js:64:3)
    at Module._compile (internal/modules/cjs/loader.js:711:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:722:10)
    at Module.load (internal/modules/cjs/loader.js:620:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:559:12)
    at Function.Module._load (internal/modules/cjs/loader.js:551:3)
    at Module.require (internal/modules/cjs/loader.js:658:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/client_interceptors.js:144:12) code: 'MODULE_NOT_FOUND' }
MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
Launching application.
Shutting down server...
Stopping module helper: updatenotification
Stopping module helper: calendar
Stopping module helper: newsfeed
Stopping module helper: updatenotification
Stopping module helper: calendar
Stopping module helper: newsfeed

I Feel like i just oversee something really easy here…