I am not good in English. please refer to me.

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-v3.0-linux-arm-glibc
Found: [node-v64-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-v3.0-linux-arm-glibc/grpc_node.node’

How do i fix this error??