problem with model name that have 's'!

Hi everyone. I have many to many user, role relations. so I have good things with $user->roles or $user->roles(). I make pipeline to filter queries like:

$users = app(Pipeline::class)
            ->send(User::query())
            ->through(RoleFilter::class)
            ->thenReturn();

RoleFilter class:

use App\Models\Role as RoleModel;
class Role extends Filter
{
//abstract applyFilter are trigered on Filter handle()
protected function applyFilter(Builder $queryBuilder, $filterData)
{
    $role = RoleModel::where('name', $filterData)->first();
        if (empty($role)){
            return $next($request);
        } else {
            return $queryBuilder->with('roles')
                ->whereHas('roles', function (Builder $query)use($role){
                        $query->where('id', $role->id);
                });
            }
        }

finally, it returns me:

Call to undefined method App\Models\User::role()

Bad Method Call
Did you mean App\Models\User::roles() ?

when I eliminate 's' from the roles method name in User Model and codes wherever I use it, it's done correctly. What's the problem? does whereHas() work with one to one or one to many? works whereHas('roles', function() )correctly in controller. :|