The lease probably also says how many months it is for. Look for that. The error is clearly a typo because you cannot have a lease that describes a term that cannot exist (it terminates before it starts). So, I think a court would easily interpret it to be a one year lease. The lease probably also discusses improvements to the property like the fence and flooring. Those belong to the landlord now.
DISCLAIMER: This is not specific legal advice and does not establish an attorney/client relationship.