Why show "throw new errors.AssertionError({"

[tterrysoso]

Details
AssertionError [ERR_ASSERTION]: missing path
at Module.require (module.js:594:3)
at require (internal/module.js:11:18)
at Object. (/Users/y/.npm-global/lib/node_modules/firestore-backup-restore/node_modules/@google-cloud/firestore/build/src/index.js:24:20)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)