new Error('library dir does not exist: ' + libDir)

Hello, I have been trying to install opencv4nodejs on MacOS Mojave with npm i opencv4nodejs and it keeps giving me this error:

```
npm ERR! code 1
npm ERR! path /Users/u/trr/node_modules/opencv4nodejs
npm ERR! command failed
npm ERR! command sh -c node ./install/install.js
npm ERR! info install using lib dir: /Users/u/trr/node_modules/opencv-build/opencv/build/lib
npm ERR! /Users/u/trr/node_modules/opencv4nodejs/install/install.js:37
npm ERR! throw new Error('library dir does not exist: ' + libDir)
npm ERR! ^
npm ERR!
npm ERR! Error: library dir does not exist: /Users/u/trr/node_modules/opencv-build/opencv/build/lib
npm ERR! at Object. (/Users/u/trr/node_modules/opencv4nodejs/install/install.js:37:9)
npm ERR! at Module._compile (node:internal/modules/cjs/loader:1092:14)
npm ERR! at Object.Module._extensions..js (node:internal/modules/cjs/loader:1121:10)
npm ERR! at Module.load (node:internal/modules/cjs/loader:972:32)
npm ERR! at Function.Module._load (node:internal/modules/cjs/loader:813:14)
npm ERR! at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
npm ERR! at node:internal/main/run_main_module:17:47
```

Have tried so many things but it just wouldn't work. Would be great if someone can help me with this.