Relation Manager Button not showing up

public function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('name'),
                Tables\Columns\TextColumn::make('url'),
            ])
            ->filters([
                //
            ])
            ->headerActions([
                Tables\Actions\CreateAction::make(),
                Tables\Actions\AssociateAction::make(),
            ])
            ->actions([
                Tables\Actions\EditAction::make(),
                Tables\Actions\DissociateAction::make(),
                Tables\Actions\DeleteAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DissociateBulkAction::make(),
                    Tables\Actions\DeleteBulkAction::make(),
                ]),
            ]);
    }