The Lessee shall repair and amend any defect in the interior of the Leased Premises for which the Lessee is responsible hereunder, subject to the fair wear and tear exception, as and when demanded by the Lessor by written notice which shall be given to the Lessee or left on the Leased Premises. The Lessee shall also pay all the costs of such repair and amendment carried out by the Lessor or its agents.