Error: Cannot find module '@ionic/app-scripts'

Try installing app-script from npm

npm i @ionic/app-scripts

To get the latest @ionic/app-scripts, run the following command:

npm install @ionic/app-scripts@latest --save-dev

do not downgrade the node version, update the version of "app-scripts":

To get the latest @ionic/app-scripts, please run:

npm install @ionic/app-scripts@latest --save-dev

I was facing same issue, here is what I did-

1. Removed node_modules from directory (Manually).
2. open project dir
3. run this command-

 npm install

That fixed those errors for me.

See here.

I had this issue , i solved it by deleting node_modules/ folder and ran the command npm installnow my app works

I tried every non-downgrade solution mentioned in this thread, in all kinds of ways and none of them worked. With nothing left to lose, I went down the downgrade route (I used sudo apt-get purge --auto-remove nodejs to remove previous 8.x version and then installed the last stable ver on the 6.x branch using the nodesource ppa).

Still got the same errors trying to run in the original project folders, but then I created a new project and ionic serve worked just fine in that space.

FWIW, I did not need to run npm update or npm i @ionic/app-scripts afterwards, but I did find it necessary to adopt the habit of running commands with sudo in front (or you sudo -s into root account).

I ran into the same issue and i had problems fixing it. However i update my app scripts npm install -g @ionic/app-scripts@latest --save-dev to the latest version and my problem was solved

npm install -g @ionic/app-scripts@latest --save-dev

Error: app-script not found/ app-script not installed/ app-script module is not found

Try this work for me, Your also:

 - npm cache clean --force
   
 - npm install @ionic/app-scripts@latest --save-dev
   
 - npm install -g @angular/cli

I had the issue, solved by execute cnpm i @ionic/app-scripts.

Just open a new terminal window/session. I could not figure it out, but it's probably related to env.

None of the options worked for me. But I could make it work by updating node with npm update After this, the problem was solved and the application started. Good Luck.

I had the same problem and here is what worked for me

I was trying to run the program using VSCode terminal, Instead I used the windows cmd and it ran perfectly. I think the error is in VSCode terminal, it cannot identify the app-scripts module inside the project. Maybe it will be fixed in a later update.

Delete node_modules and package-lock.json

rm -rf node_modules package-lock.json
npm install

Reference: https://github.com/ionic-team/ionic-cli/issues/3399

After half a day trying to solve this And after: python version error node-sass misconfiguration error

I did the following

• Remove node-modules folder
• Run "npm audit fix --force"
• Downgrade webpack installation "npm uninstall webpack && install [email protected]"

The last one because ionic build was giving me an error on that package after the audit

In my case, I need to set NODE_ENV to production then it installs successfully

set NODE_ENV=production
npm install @ionic/app-scripts@latest --save-dev

You must create the project as administrator if you have mac or linux uses sudo, if you have windows run the console as administrator and create the project