Error: Did you forget to run "frontity build"?

modyydom · 24 March 2020 05:38

Every time I run npx frontity serve it gives me this error

FULL ERROR

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'run', 'serve' ]
2 info using npm@6.14.3
3 info using node@v12.16.1
4 verbose run-script [ 'preserve', 'serve', 'postserve' ]
5 info lifecycle frontitysite@1.0.0~preserve: frontitysite@1.0.0
6 info lifecycle frontitysite@1.0.0~serve: frontitysite@1.0.0
7 verbose lifecycle frontitysite@1.0.0~serve: unsafe-perm in lifecycle true
8 verbose lifecycle frontitysite@1.0.0~serve: PATH: /usr/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/opt/website/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
9 verbose lifecycle frontitysite@1.0.0~serve: CWD: /opt/website
10 silly lifecycle frontitysite@1.0.0~serve: Args: [ '-c', 'frontity serve' ]
11 silly lifecycle frontitysite@1.0.0~serve: Returned: code: 1  signal: null
12 info lifecycle frontitysite@1.0.0~serve: Failed to exec serve script
13 verbose stack Error: frontitysite@1.0.0 serve: `frontity serve`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack     at EventEmitter.emit (events.js:311:20)
13 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:311:20)
13 verbose stack     at maybeClose (internal/child_process.js:1021:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5)
14 verbose pkgid frontitysite@1.0.0
15 verbose cwd /opt/website
16 verbose Linux 4.19.0-8-cloud-amd64
17 verbose argv "/usr/bin/node" "/usr/bin/npm" "run" "serve"
18 verbose node v12.16.1
19 verbose npm  v6.14.3
20 error code ELIFECYCLE
21 error errno 1
22 error frontitysite@1.0.0 serve: `frontity serve`
22 error Exit status 1
23 error Failed at the frontitysite@1.0.0 serve script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

frontity info

System:

OS: Windows 10 10.0.18362
CPU: (8) x64 Intel® Core™ i7-7700HQ CPU @ 2.80GHz
Memory: 862.71 MB / 15.89 GB

Binaries:

Node: 12.13.1 - C:\Program Files\nodejs\node.EXE
npm: 6.11.3 - C:\Program Files\nodejs\npm.CMD

Browsers:

Edge: 44.18362.449.0
Internet Explorer: 11.0.18362.1

npmPackages:

@frontity/tiny-router: 1.0.18
babel-loader: ^8.0.5 => 8.0.5 (8.1.0)
bootstrap: ^4.4.1 => 4.4.1
frontity: ^1.4.4 => 1.5.2
frontity-contact-form-7: ^0.1.4 => 0.1.4
gsap: file:gsap-bonus.tgz => 3.1.1
masonry-layout: ^4.2.2 => 4.2.2
prop-types: ^15.7.2 => 15.7.2
react: ^16.12.0 => 16.13.1
react-disqus-comments: ^1.4.0 => 1.4.0
react-player: ^1.15.2 => 1.15.2
react-select: ^3.0.8 => 3.1.0
react-slick: ^0.25.2 => 0.25.2
react-spinners: ^0.8.0 => 0.8.1
react-spring: ^8.0.27 => 8.0.27
slick-carousel: ^1.8.1 => 1.8.1
theme: ./packages/theme => 1.0.0

npmGlobalPackages:

frontity: Not Found
npx: Not Found

the build folder

By the way it works well with frontity dev then frontity serve
BUT it only gives this error when running frontity build then frontity serve

@development-team
Please it is argent

luisherranz · 24 March 2020 08:40

I’m sorry @modyydom, we shouldn’t catch errors in frontity serve, totally my fault.

Could you please go to the file

node_modules/@frontity/core/dist/src/scripts/serve.js

and change this line

throw new Error('Something went wrong. Did you forget to run "frontity build"?');

for this

throw error;

and then run npx frontity serve again to see the real error?

luisherranz · 24 March 2020 08:47

I have created a PR to change that, by the way: https://github.com/frontity/frontity/pull/350

modyydom · 24 March 2020 16:55

Thank @luisherranz

after throwing the error I get this line

Error: Cannot read property 'flags' of undefined


## System:
 - OS: Windows 10 10.0.18362
 - CPU: (8) x64 Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
 - Memory: 1.69 GB / 15.89 GB
## Binaries:
 - Node: 12.13.1 - C:\Program Files\nodejs\node.EXE
 - npm: 6.11.3 - C:\Program Files\nodejs\npm.CMD
## Browsers:
 - Edge: 44.18362.449.0
 - Internet Explorer: 11.0.18362.1
## npmPackages:
 - @frontity/tiny-router:  1.1.1 
 - bootstrap: ^4.4.1 => 4.4.1 
 - frontity: ^1.5.2 => 1.5.2 
 - frontity-contact-form-7: ^0.1.4 => 0.1.4 
 - gsap: file:gsap-bonus.tgz => 3.1.1 
 - masonry-layout: ^4.2.2 => 4.2.2 
 - prop-types: ^15.7.2 => 15.7.2 
 - react: ^16.12.0 => 16.13.1 
 - react-disqus-comments: ^1.4.0 => 1.4.0 
 - react-player: ^1.15.2 => 1.15.2 
 - react-select: ^3.0.8 => 3.1.0 
 - react-slick: ^0.25.2 => 0.25.2 
 - react-spinners: ^0.8.0 => 0.8.1 
 - react-spring: ^8.0.27 => 8.0.27 
 - slick-carousel: ^1.8.1 => 1.8.1 
 - theme: ./packages/theme => 1.0.0 
## npmGlobalPackages:
 - frontity: Not Found
 - npx: Not Found

modyydom · 25 March 2020 02:13

@development-team

sorry for this but it is really critical as the site have to be working and we are blocked by this issue.

there is a deadline and we are about to miss it

thank you very much and sorry again for this.

mmczaplinski · 25 March 2020 03:01

Hi @modyydom! Sorry for the stress!

2 questions for you:

Does the Error: Cannot read property 'flags' of undefined have a stacktrace? Could you provide it? It should point us to the problem.
Every single google search result on the first page points with for “Error: Cannot read property ‘flags’ of undefined” seems to point to a typescript or angular issue like this one or that one. Are you using TS in the project and are you sure that it’s not a TS issue?

modyydom · 25 March 2020 03:55

Thank very much @mmczaplinski
1- unfortunately There is NO stacktrace for this issue
this is all what I get

2- I’m not using any TS code

luisherranz · 25 March 2020 07:07

An internal param called flags is used by one of the libraries we use in the CLI, commander so I guess the problem may be there. I’m going to investigate.

luisherranz · 25 March 2020 07:12

I’ve just started a fresh project on Windows 10 and it works fine.

Things you can try:

Search for ".flags" in your code. Make sure the error is not in your code.
Run npx frontity dev -p and check if you see any error in your code that only happens in production mode.
Remove node_modules and package-lock.json, update all packages and do npm install again. Follow this guide: https://docs.frontity.org/guides/keep-frontity-updated
Try with both npm run dev or npx frontity dev to see if it makes a difference.

If the problem persists, check the version of commander with:

npm ls | find "commander"

I am running 2.20.3 here and it works fine here in Windows 10.

modyydom · 27 March 2020 01:08

I found the cause of the problem

it is due to importing react-slick

I found also this behavior

The site is WORKING well in these situations:

On Zeit now server
With npx frontity dev
With npx frontity dev -p
When running npx frontity serve AFTER npx frontity dev

The site is NOT working in these situations:

When running npx frontity serve AFTER npx frontity build
When running npx frontity serve AFTER npx frontity dev -p

I don’t know what in zeit now that makes it working that is not in the npx frontity build

I’m sorry again for being so late and I really thankful of your efforts in helping me

luisherranz · 27 March 2020 08:53

Thanks @modyydom, I was able to reproduce the issue. The problem is caused by the TypeScript compiler interacting with react-slick in production mode.

I am not sure about the reason, but it’s not a good idea to run the TypeScript compiler on frontity serve, so I have filed a bug to get rid of that: https://github.com/frontity/frontity/issues/355

Until we fix that issue, you can create a file that does the require itself and run that, like this:

const serve = require("@frontity/core/dist/src/scripts/serve").default;

serve({
  isHttps: false,
  port: 3000
});

You can take a look at this repo to see a full example:

Let me know if that solves your problem

modyydom · 27 March 2020 14:32

That’s Great

It is working perfectly

prainua · 5 June 2020 13:53

please fix this problem
i can not deploy this on Now.

SantosGuillamot · 9 June 2020 06:35

Hi @prainua, thanks a lot for the feedback and sorry for the inconvenience this may have caused We’ve just bumped up the priority of this bug and it should be addressed in the coming weeks. We’ll keep track of it at the GitHub issue.

luisherranz · 6 July 2020 08:46

Fixed in our last release by @mmczaplinski.

prainua · 9 July 2020 09:30

I still have a error. I updated to the latest version.

npx npm-check-updates -u
npm install

juanma · 14 July 2020 07:35

Hi @prainua

Did you try the solution provided above? → Error: Did you forget to run "frontity build"?

If it’s still not working, can you please provide the info suggested here?

The more info you provide about your issue the better. Providing a repo or code-sandbox with your code is especially helpful to find solutions of technical issues with specific code

ni.bonev · 5 October 2020 12:48

Hey @juanma. I am also facing this issue and I am totally stuck. I cant even figure out how to start debugging it.

npx frontity build completes without issue
npx frontity serve fails with the following message:

donkokoッ: ~/devs/JS/kh-frontity-theme [git:live]
$ npx frontity serve

Error: Cannot read property 'flags' of undefined

If you need help please visit /.

Happens to me also on the live server, that is how I found the issue. I have made a github action that uses ssh to connect to server, pull from github, build the app and run npx frontity serve but it fails in the last step because of this error.

juanma · 5 October 2020 13:37

Hi @ni.bonev,

Can you check the following?

You have Frontity core & packages updated to the latest versions → https://docs.frontity.org/guides/keep-frontity-updated
You’re executing from the root of your project (from where there should be a build folder generated by npx frontity build)

In these are OK, can you please provide a repo or code-sandbox with your code? This is especially helpful to find solutions of technical issues with specific code

ni.bonev · 5 October 2020 15:37

Hey @juanma,

I have done all of this multiple times, unfortunatelly that didn’t bring me further. I also saw the other posts mentioning the same issue and they both have very different causes, that’s why I was wondering if I can somehow log more information or see the full stack.
I can provide a github repo, but its private. Can you give me your github user and I can add you?