Pug isn't sensed, even when it's installed

[mrmiffmiff]

Literally using the official solution, but the module pug still can't be found. I've installed it multiple times, including the version listed on the main page of the repository and also globally at some point. Exact error code, if it's needed:

Error: Cannot find module 'pug' 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 new View (/Users/reisenman/node_modules/express/lib/view.js:80:30) at EventEmitter.render (/Users/reisenman/node_modules/express/lib/application.js:570:12) at ServerResponse.render (/Users/reisenman/node_modules/express/lib/response.js:971:7) at /Users/reisenman/Documents/expressworks/pg.js:7:9 at Layer.handle [as handle_request] (/Users/reisenman/node_modules/express/lib/router/layer.js:95:5) at next (/Users/reisenman/node_modules/express/lib/router/route.js:137:13)

Advice?