Query builder on filament resource

hi everyone, i am having an issue using query builder for a filament table resource on page LearnersRource page generated using filament:

public static function table(Table $table): Table { return $table ->columns([ //All table columns and data ]) ->query(function (Builder $query){

            //$user = Auth::user();

            $user = auth('web')->user();
            
            if($user->isSuperAdmin()){
                return $query;
            }

            if($user->isEmployer()){
                return $query->where('employer_id', $user->employer_id);
            }

            return Learner::query()->where('1 = 0');


        })

}

Note isSuperAdmin & isEmployer method are underlined as undefined methods even when declared in user Model class as

public function isSuperAdmin(): bool
{
    return $this->hasRole('super_admin');
}

public function isEmployer(): bool
{
    return $this->hasRole('employer');
}

and the learner model class handles the relationship as:

public function user(): BelongsTo
{
    return $this->belongsTo(User::class);
}