IocLookupException: E_IOC_LOOKUP_FAILED: Cannot resolve "Adonis/Acl/Is" namespace from the IoC Container

[AngelinSneha]

I am trying to use adonis-acl with AdonisJs and i landed with this exception IocLookupException: E_IOC_LOOKUP_FAILED: Cannot resolve "Adonis/Acl/Is" namespace from the IoC Container while setting up adonis-acl`.
start/kernel.ts code

import Server from '@ioc:Adonis/Core/Server' Server.middleware.registerNamed({ auth: 'App/Middleware/Auth', admin: 'App/Middleware/AuthRole', is: 'Adonis/Acl/Is', can: 'Adonis/Acl/Can', })
I do not know why this error is popping up. Could you please help me?