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
  --> 8e01ddacef112a19f51463fa8dda12bbd8bb3f783a244c586b1bde2f6e213259:23:26
   |
23 |         let receiverRef = recipientAccount.capabilities.borrow<&{FungibleToken.Receiver}>(/public/exampleTokenReceiver)!
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^