"Invalid `roles` param: Value must a valid array no longer than 100 items and Parameter must contain

I have this code

await teams.createMembership( 'admin', // The team ID [ Permission.update(Role.user(userRefId)), // Permissions for the user Permission.read(Role.user(userRefId)) ], this.accountForm.value['userName'], // User name userRefId // User ID );

Im usng ID.unique() to generate the values of IDs. I'm sure its in the roles array but I follow the documentation here (https://appwrite.io/docs/advanced/platform/permissions#example-1-basic-usage)

What could be the cause of the error?

The documentation you’ve pointed to is on how to use Permissions / Roles to control access to resources. teams.createMembership() is to add a user to a Team, and set the user’s Roles.

You can see the documentation for teams.createMembership() here

Directly addressing your error here, the roles array (the second parameter in teams.createMembership() should be an array of strings