Ошибка развертывания FIREBASE: не удается найти модуль "firebase-admin"

Недавно я начал получать ошибку ниже при попытке развернуть Firebase (после того, как это было успешно в прошлом). Я не уверен, что могло измениться для этого, чтобы начать происходить. Если я запускаю firebase для обслуживания на локальном хосте, все работает нормально. Мой пакет .json и требует от index.js также ниже.

i  deploying functions, hosting
i  functions: ensuring necessary APIs are enabled...
i  runtimeconfig: ensuring necessary APIs are enabled...
+  runtimeconfig: all necessary APIs are enabled
+  functions: all necessary APIs are enabled
i  functions: preparing functions directory for uploading...
i  functions: packaged functions (46.02 KB) for uploading
+  functions: functions folder uploaded successfully
i  hosting: preparing public directory for upload...
!  Warning: Public directory does not contain index.html
+  hosting: 9 files uploaded successfully
i  starting release process (may take several minutes)...
i  functions: updating function app...
!  functions[app]: Deploy Error: Function load error: Code in file index.js can't be loaded.
Did you list all required modules in the package.json dependencies?
Detailed stack trace: Error: Cannot find module 'firebase-admin'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/user_code/node_modules/firebase-functions/lib/apps.j
s:25:16)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)


Functions deploy had errors. To continue deploying other features (such as datab
ase), run:
firebase deploy --except functions

Error: Functions did not deploy properly.

package.json:

{
"name": "functions",
"description": "Cloud Functions for Firebase",
"dependencies": {
"@google-cloud/vision": "^0.12.0",
"async": "^2.5.0",
"consolidate": "^0.14.5",
"express": "^4.15.4",
"firebase-admin": "^5.4.0",
"firebase-functions": "^0.5.7",
"handlebars": "^4.0.10",
"jquery": "^3.2.1",
"js-levenshtein": "^1.1.3",
"json-query": "^2.2.2"
},
"private": true
}

Из index.js:

const functions = require('firebase-functions');
const firebase = require('firebase-admin');
const express = require('express');
const engines = require('consolidate');
const Vision = require('@google-cloud/vision');
const levenshtein = require('js-levenshtein');
const restName = require('./restName');
const parser = require('./parser');
const jsonQuery = require('json-query')

const firebaseApp = firebase.initializeApp(
functions.config().firebase
);