"Class extends value undefined is not a constructor or null"

[a7mdragab]

Hey
I am getting this error:

TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> 
(C:\Users\ahmed\AppData\Roaming\npm\node_modules\@adonisjs\cli\src\Commands\Base\index.js:17:31) 

in this line

const ace = require('../../../lib/ace')
"class BaseCommand extends ace.Command"

ace is not found and I checked them and are already existing but not working

to reproduce the error, just create new adonisjs project and try this plugin:
https://www.npmjs.com/package/@shagital/adonisjs-crud-generator

[RomainLanz]

Hey @a7mdragab! 👋🏻

You are trying to use an AdonisJS 4 package on AdonisJS 5.

[a7mdragab]

Hey @a7mdragab! 👋🏻

You are trying to use an AdonisJS 4 package on AdonisJS 5.

Thanks for your reply
But how is this?
The plugin itself depends on adonisjs 4?

[thetutlage]

to reproduce the error, just create new adonisjs project and try this plugin:
https://www.npmjs.com/package/@shagital/adonisjs-crud-generator

Please report the issue to the package creator. It is not an official package