Smart Lock Simulator

Node.js Nuki Smart Lock simulator:

I’m trying to install the simnuki but keep getting the same error…
Tried to install sodium but keep getting the same error…

Installing on a Rpi 4b, could anybody help me please? I need to get this running for a schoolproject…

Error: Cannot find module ‘sodium’
at Function.Module._resolveFilename (module.js:325:15)
at Function.Module._load (module.js:276:25)
at Module.require (module.js:353:17)
at require (internal/module.js:12:17)
at Object. (/home/pi/simnuki/main.js:6:14)
at Module._compile (module.js:409:26)
at Object.Module._extensions…js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)