Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: unexpectedly found nil while forcing an Optional value
  --> 54ce284489b8a7c9839e40436790917f4ca88aa09f2a5fa324e435b38ed39f5b:29:27
   |
29 |           let collection = collectionCap.borrow()!
   |                            ^^^^^^^^^^^^^^^^^^^^^^^