@davidpearl1 I got it working. Now I am stuck because when using electron-rebuild it fails, did you also have problems using electron-rebuild.

@sean I get this message when trying to use electron-rebuild

make: *** Ingen regel för att skapa målet ”Release/obj.target/grpc/deps/grpc/src/cpp/ext/filters/census/grpc_context.o”, som behövs av ”Release/obj.target/libgrpc.a”.  Stannar.
make: Lämnar katalogen ”/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/build”
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/node-gyp/lib/build.js:262:23)
gyp ERR! stack     at ChildProcess.emit (events.js:180:13)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:209:12)
gyp ERR! System Linux 4.14.52-v7+
gyp ERR! command "/usr/bin/node" "/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/.bin/node-gyp" "rebuild" "--target=2.0.0" "--arch=arm" "--dist-url=https://atom.io/download/electron" "--build-from-source" "--module_name=grpc_node" "--module_path=/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/node/extension_binary/electron-v2.0-linux-arm-glibc" "--host=https://node-precompiled-binaries.grpc.io/" "--remote_path={name}/v1.14.0" "--package_name=electron-v2.0-linux-arm-glibc.tar.gz"
gyp ERR! cwd /home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc
gyp ERR! node -v v9.11.2
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok 

Failed with exit code: 1
    at SafeSubscriber._error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/spawn-rx/lib/src/index.js:277:84)
    at SafeSubscriber.__tryOrUnsub (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:242:16)
    at SafeSubscriber.error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:201:26)
    at Subscriber._error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:132:26)
    at Subscriber.error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:106:18)
    at MapSubscriber.Subscriber._error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:132:26)
    at MapSubscriber.Subscriber.error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:106:18)
    at SafeSubscriber._next (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/spawn-rx/lib/src/index.js:251:65)
    at SafeSubscriber.__tryOrSetError (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:251:16)
    at SafeSubscriber.next (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:191:27)

@sean This is what I get when I run magic mirror

> magicmirror@2.4.1 start /home/pi/MagicMirror
> sh run-start.sh

Starting MagicMirror: v2.4.1
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.
No helper found for module: MMM-darksky-hourly.
Initializing new module helper ...
Module helper loaded: MMM-MyCalendar
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-v2.0-linux-arm-glibc
Found: [node-v59-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-v2.0-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.
No helper found for module: MMM-darksky-hourly.
Initializing new module helper ...
Module helper loaded: MMM-MyCalendar
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-v2.0-linux-arm-glibc
Found: [node-v59-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-v2.0-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:63:3)
    at Module._compile (module.js:642:30)
    at Object.Module._extensions..js (module.js:653:10)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:504:12)
    at Function.Module._load (module.js:496:3)
    at Module.require (module.js:586:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/client_interceptors.js:145:12)
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-v2.0-linux-arm-glibc
Found: [node-v59-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-v2.0-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:63:3)
    at Module._compile (module.js:642:30)
    at Object.Module._extensions..js (module.js:653:10)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:504:12)
    at Function.Module._load (module.js:496:3)
    at Module.require (module.js:586:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/client_interceptors.js:145:12) 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.

@sean I get the same error as I shared abow

@sean should I run

npm install --save-dev electron-rebuild
./node_modules/.bin/electron-rebuild

In MMM-AssistantMk2 or in MagicMirror directory?

When I start my magic mirror I get node version error so I did as the instructions told me and tried using electron-rebuild. But when I use electron-rebuild I get this error:

make: *** Ingen regel för att skapa målet ”Release/obj.target/grpc/deps/grpc/src/cpp/ext/filters/census/grpc_context.o”, som behövs av ”Release/obj.target/libgrpc.a”.  Stannar.
make: Lämnar katalogen ”/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/build”
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/node-gyp/lib/build.js:262:23)
gyp ERR! stack     at ChildProcess.emit (events.js:180:13)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:209:12)
gyp ERR! System Linux 4.14.52-v7+
gyp ERR! command "/usr/bin/node" "/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/.bin/node-gyp" "rebuild" "--target=2.0.0" "--arch=arm" "--dist-url=https://atom.io/download/electron" "--build-from-source" "--module_name=grpc_node" "--module_path=/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/node/extension_binary/electron-v2.0-linux-arm-glibc" "--host=https://node-precompiled-binaries.grpc.io/" "--remote_path={name}/v1.14.0" "--package_name=electron-v2.0-linux-arm-glibc.tar.gz"
gyp ERR! cwd /home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc
gyp ERR! node -v v9.11.2
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok 

Failed with exit code: 1
    at SafeSubscriber._error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/spawn-rx/lib/src/index.js:277:84)
    at SafeSubscriber.__tryOrUnsub (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:242:16)
    at SafeSubscriber.error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:201:26)
    at Subscriber._error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:132:26)
    at Subscriber.error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:106:18)
    at MapSubscriber.Subscriber._error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:132:26)
    at MapSubscriber.Subscriber.error (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:106:18)
    at SafeSubscriber._next (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/spawn-rx/lib/src/index.js:251:65)
    at SafeSubscriber.__tryOrSetError (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:251:16)
    at SafeSubscriber.next (/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/rxjs/Subscriber.js:191:27)

Excuse the Swedish parts.

What do I do to make it work?

@davidpearl1 How did you fix it I also tried to delete my project and recreate it but it did not help. And what do you mean you deleted all other projects and combined it into one?