Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: pre-condition failed: Could not borrow reference to find lease collection
  --> b1635104e5eaa118072c711aaf2d58da4399a40be973ab056edfa65bf4abfe71:24:8
   |
24 |         self.leases != nil : "Could not borrow reference to find lease collection"
   |         ^^^^^^^^^^^^^^^^^^