Claire offered to sell her car to Bella for $10,000. Bella accepted the offer.

Claire offered to sell her car to Bella for $10,000. Bella accepted the offer. The car was currently in storage, so the two people agreed to go together later that day to pick up the car from the storage facility. Neither one knew that the storage facility had burned down the night before and all of the property held there had been destroyed. Is there a valid contract?