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
  --> 390c96568df75f37043e1b7cff5bdfd59a41d0712ac2a443951bb19700f07ba9:23:26
   |
23 |         let receiverRef = recipientAccount.capabilities.borrow<&{FungibleToken.Receiver}>(/public/exampleTokenReceiver)!
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^