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
  --> 6ff6489be336daf2ca547cf30cd2bde080ccacec5a89a3170b371a3cceece0b9:11:22
   |
11 |             let cap = getAccount(addr).capabilities.borrow<auth(FungibleToken.Withdraw) &FlowToken.Vault>(/public/flowTokenReceiver)!
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^