Firebase hosting deploy error "HTTP Error: 404, Not Found"

Question

I don't know if this is related to the recent bump of firebase-tools to 6.0 or not. But I'm unable to deploy my files to a hosting project.

The output after I type firebase deploy:

=== Deploying to 'legofun-8f22d'...

i  deploying hosting
i  hosting[legofun-8f22d]: beginning deploy...
i  hosting[legofun-8f22d]: found 42 files in /_site
(node:10178) UnhandledPromiseRejectionWarning: Error
    at new FirebaseError (/usr/lib/node_modules/firebase-tools/lib/error.js:9:18)
    at Object.reject (/usr/lib/node_modules/firebase-tools/lib/utils.js:67:31)
    at /usr/lib/node_modules/firebase-tools/lib/deploy/hosting/prepare.js:48:26
    at arrayEach (/usr/lib/node_modules/firebase-tools/node_modules/lodash/lodash.js:516:11)
    at Function.forEach (/usr/lib/node_modules/firebase-tools/node_modules/lodash/lodash.js:9344:14)
    at module.exports (/usr/lib/node_modules/firebase-tools/lib/deploy/hosting/prepare.js:29:7)
    at _chain (/usr/lib/node_modules/firebase-tools/lib/deploy/index.js:22:40)
    at /usr/lib/node_modules/firebase-tools/lib/deploy/index.js:63:16
    at 
    at process._tickDomainCallback (internal/process/next_tick.js:229:7)
(node:10178) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:10178) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
⠏  hosting: adding files to version [0/42] (0%)(node:10178) UnhandledPromiseRejectionWarning: Error
    at new FirebaseError (/usr/lib/node_modules/firebase-tools/lib/error.js:9:18)
    at module.exports (/usr/lib/node_modules/firebase-tools/lib/responseToError.js:38:12)
    at Request._callback (/usr/lib/node_modules/firebase-tools/lib/api.js:37:35)
    at Request.self.callback (/usr/lib/node_modules/firebase-tools/node_modules/request/request.js:185:22)
    at emitTwo (events.js:126:13)
    at Request.emit (events.js:214:7)
    at Request. (/usr/lib/node_modules/firebase-tools/node_modules/request/request.js:1161:10)
    at emitOne (events.js:116:13)
    at Request.emit (events.js:211:7)
    at IncomingMessage. (/usr/lib/node_modules/firebase-tools/node_modules/request/request.js:1083:12)
(node:10178) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 6)

Error: HTTP Error: 404, Not Found

Answer 1

I had the same problem

In my case I fixed it by adding on the firebase.json a dot before /dist on public tag "public": "./dist/my-app-name",

Example of my json

{
  "hosting": {
    "public": "./dist/my-app-name",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}