Up until recently I was able to deploy development build to Heroku and since couple of days ago even out-of-the-box npx create-react-app would fail with H10 code - solution was to ofc deploy the production build like below:
Thanks. It solved my problem on Heroku, but I can't run my app locally.
After installing serve and modifying package.json, when I run npm start - serve says the app is available on port 5000 but I'm getting 404 page there. (it doesn't work also on port 3000 which was the one that I used so far).
Any ideas why?
I am glad to hear this worked for you.
Just a side note:
commands like npm start can work directly because they are default commands from npm but custom commands like dev set by the user would only work with the run command. npm run dev. I hope this clears things up.
I have no idea why, but install serve --s solved the issue!!! Why is that??
I have many other older react apps running normally on heroku without needing to install serve --s
If you look at the logs it says 'starting development server' - given that if we deploy something to heroku we want it to be prod environment for variety of reasons (stackoverflow.com/questions/481511...). I looked at the versions of react and it so happened that react itself was upped a version 2-3 days prior to my attempt to deploy so I realized that whatever heroku was doing before to serve the build server obv somehow broke so I decided to change it to prod build (which I should have done from the get go but never cared as I just wanted to send the app to friends)
We can only speculate, React was updated on March 20th and around then it stopped working so I am guessing there is something that is happening with webpack or whatever was successfully serving our apps.
Thanks a lot, now deploy on Heroku is working! But I've found another issue. Changing from npm start to serve -s build the local solution (npm run dev) is the correct one but the one on Heroku is not the same (is something like the first beninning project template). Why this difference? I've tried with a npm run build command but no difference. Thank you
2.) copied the above code("scripts") in place of my previous code "scripts" in my package.json file
3.) git commit -am "new update"
4.) git push heroku master
and Boom I found my wesite on herokuapp
thank you very much
Pros BR's de plantão, isso aqui ainda funciona, fiz aqui no meu e meu deploy deu certo, caso esteja assim no seu,
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
}
use o npm install serve --s e altere igual ao comentário a cima.
THANK YOU!!! i created this account just to thank you because I had so so much trouble deploying. Build was fine but after build when heroku tried to run start, I ran into so many H10 and H12 errors and the app can't even display a static page.
Looks like i picked a bad time to attempt to deploy my first web app. Does this mean I need to run this line in my command module "npm install serve --s"
and then copy this into my package.json exactly as is?
As of May 23rd, 2020. This fix worked beautifully. I've never had any issues pushing to heroku until my most recent project. This was perhaps my 4th or 5th attempt to fix it and this work amazingly. Thanks DaleLuce
@daleluce
Thank you so much thank uuuu!! i spent all the day to fix this problem i tied so many solution on internet but only your solution worked!! i was give up but you saved me, i made the account now to thank you <3
I made this app without authentication and there was no problem deploying it on heroku but now I have added authentication to it and heroku is creating trouble. Looks like I am gonna stuck here for weeks.
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Up until recently I was able to deploy development build to Heroku and since couple of days ago even out-of-the-box npx create-react-app would fail with H10 code - solution was to ofc deploy the production build like below:
npm install serve --s
"scripts": {
"dev": "react-scripts start",
"start": "serve -s build",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject",
"heroku-postbuild": "npm run build"
}
Thanks. You saved me a lot of time and trouble.
Hero!!! Thank you!
Really thank you Very Much you saved my Wasted Time with installing serve and calling it on start script
Thanks. It solved my problem on Heroku, but I can't run my app locally.
After installing serve and modifying package.json, when I run npm start - serve says the app is available on port 5000 but I'm getting 404 page there. (it doesn't work also on port 3000 which was the one that I used so far).
Any ideas why?
Hi Haim,
If you run yarn start/npm start now it points to 'serve -s build' instead of 'react-scripts start'.
Make sure you've added below:
"dev": "react-scripts start",
"start": "serve -s build",
and to run your app locally do npm run dev not npm start
Thanks. It didn't work with "npm dev" (I got that "dev" is invalid command), but it did work with "npm run dev".
I am glad to hear this worked for you.
Just a side note:
commands like
npm startcan work directly because they are default commands from npm but custom commands likedevset by the user would only work with theruncommand.npm run dev. I hope this clears things up.Thanks my brother....
Greetings from Argentina Corrientes
Finally! it worked!! Thank you so much!!!!
I have no idea why, but install serve --s solved the issue!!! Why is that??
I have many other older react apps running normally on heroku without needing to install serve --s
Thanks a lot!
Thank you very much. Now it serves like a charm.
This worked ...Thanks for saving a day's work
Thank you sooo much! This sure saved me a lot of frustration. Was wondering if you could give a bit of insight about how you figured out this solution
If you look at the logs it says 'starting development server' - given that if we deploy something to heroku we want it to be prod environment for variety of reasons (stackoverflow.com/questions/481511...). I looked at the versions of react and it so happened that react itself was upped a version 2-3 days prior to my attempt to deploy so I realized that whatever heroku was doing before to serve the build server obv somehow broke so I decided to change it to prod build (which I should have done from the get go but never cared as I just wanted to send the app to friends)
Thank you soooo much!!!! this worked!!! ater 2 days of being stucked!!!!
I spent many hours troubleshooting and this ended up working. Thank you!!
The same occurred with me. Thanks for this solution.
I am glad this helped you resolve your issue.
Thanks dude.
Same happened to me. Do you know why this is happening?
We can only speculate, React was updated on March 20th and around then it stopped working so I am guessing there is something that is happening with webpack or whatever was successfully serving our apps.
Thank you!!! This solved it
This was a lifesaver. Thanks!
Wow.. this worked like a charm.
This worked!!
Thanks a lot, now deploy on Heroku is working! But I've found another issue. Changing from npm start to serve -s build the local solution (npm run dev) is the correct one but the one on Heroku is not the same (is something like the first beninning project template). Why this difference? I've tried with a npm run build command but no difference. Thank you
24-Aug-2020 : I tried this fix and this worked for me ,
1.) "npm install serve --s" in my terminal
"scripts": {
"dev": "react-scripts start",
"start": "serve -s build",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject",
"heroku-postbuild": "npm run build"
}
2.) copied the above code("scripts") in place of my previous code "scripts" in my package.json file
3.) git commit -am "new update"
4.) git push heroku master
and Boom I found my wesite on herokuapp
thank you very much
This worked like magic! Thank you so much!
Thank you.This worked for me
Pros BR's de plantão, isso aqui ainda funciona, fiz aqui no meu e meu deploy deu certo, caso esteja assim no seu,
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
}
use o npm install serve --s e altere igual ao comentário a cima.
THAT STILL WORKS ON 30/01/2020
It works for me thank you very much !!!
Thank you for providing this steps, It also worked for me
THANK YOU!!! i created this account just to thank you because I had so so much trouble deploying. Build was fine but after build when heroku tried to run start, I ran into so many H10 and H12 errors and the app can't even display a static page.
Your solution worked PERFECTLY!
Thank You !!!
It worked for me, thanks a lot !
Looks like i picked a bad time to attempt to deploy my first web app. Does this mean I need to run this line in my command module "npm install serve --s"
and then copy this into my package.json exactly as is?
"scripts": {
"dev": "react-scripts start",
"start": "serve -s build",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject",
"heroku-postbuild": "npm run build"
}
I tried to do that and it didn't work when I went to update the master on heroku.
Thanks in advance...
Thanks for this it was helpful
As of May 23rd, 2020. This fix worked beautifully. I've never had any issues pushing to heroku until my most recent project. This was perhaps my 4th or 5th attempt to fix it and this work amazingly. Thanks DaleLuce
Works like a charm
Thank you!. This worked!
yes!!! Thank you so much!! yes yes yes yes
@daleluce Thank you so much thank uuuu!! i spent all the day to fix this problem i tied so many solution on internet but only your solution worked!! i was give up but you saved me, i made the account now to thank you <3
Thanks for letting me know Mohamed! This made my day!
Worked like a charm after 2 days of frustration! Thank you!!!
I made this app without authentication and there was no problem deploying it on heroku but now I have added authentication to it and heroku is creating trouble. Looks like I am gonna stuck here for weeks.