No plugin found
Hi.  I had a power cut last night and since then the Broadlink plugin for Homebridge isn't working any more.  On the status screen is reports:
No plugin was found for the platform "BroadlinkRM" in your config.json. Please make sure the corresponding plugin is installed correctly.

The broadlink RM config lines are still there when i look at the config editor.

Further up the status logs there are more errors:
[3/18/2021, 11:13:21 PM] ====================
[3/18/2021, 11:13:21 PM] ERROR LOADING PLUGIN homebridge-broadlink-rm:
[3/18/2021, 11:13:21 PM] Error: Cannot find module 'hap-nodejs'
Require stack:
- /homebridge/node_modules/homebridge-broadlink-rm/node_modules/homebridge-platform-helper/dist/accessory.js
- /homebridge/node_modules/homebridge-broadlink-rm/node_modules/homebridge-platform-helper/dist/index.js
- /homebridge/node_modules/homebridge-broadlink-rm/platform.js
- /homebridge/node_modules/homebridge-broadlink-rm/index.js
- /usr/local/lib/node_modules/homebridge/lib/plugin.js
- /usr/local/lib/node_modules/homebridge/lib/pluginManager.js
- /usr/local/lib/node_modules/homebridge/lib/server.js
- /usr/local/lib/node_modules/homebridge/lib/cli.js
- /usr/local/lib/node_modules/homebridge/bin/homebridge
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
    at Function.Module._load (internal/modules/cjs/loader.js:725:27)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (/homebridge/node_modules/homebridge-broadlink-rm/node_modules/homebridge-platform-helper/src/accessory.ts:3:1)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
[3/18/2021, 11:13:21 PM] ====================

Not sure what the "hap-nodejs" module is, can anyone shed any light as to what to try?
Many thanks.