Error when running my fork of truffle-core: can't find module truffle-core/run? about truffle-core HOT 1 OPEN

Debugger attached.
internal/modules/cjs/loader.js:596
    throw err;
    ^

Error: Cannot find module './lib/config'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:594:15)
    at Function.Module._load (internal/modules/cjs/loader.js:520:25)
    at Module.require (internal/modules/cjs/loader.js:650:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/robert/Documents/GitHub/ME/truffle-core/index.js:6:11)
    at Module._compile (internal/modules/cjs/loader.js:699:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
    at Module.load (internal/modules/cjs/loader.js:612:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
    at Function.Module._load (internal/modules/cjs/loader.js:543:3)
Waiting for the debugger to disconnect...

Process finished with exit code 1