Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction invocation failed when executing transaction: [Error Code: 1101] cadence runtime error: Execution failed:
error: unexpectedly found nil while forcing an Optional value
  --> ac831a00f4c1a6e8d5d9d77d06728aa8ea5382d5a19e96f7cf533fd0fa479a9b:32:29
   |
32 |             let collection = collectionCap.borrow()!
   |                              ^^^^^^^^^^^^^^^^^^^^^^^