Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: value of type `auth(FungibleToken.Withdraw) &USDCFlow.Vault?` has no member `balance`
  --> f344573da140e7a3e921c9dc272c1e73cff13ab2c93200865b477e138667271d:54:41
   |
54 |           let balance: UFix64 = vaultRef.balance
   |                                          ^^^^^^^ type is optional, consider optional-chaining: ?.balance

error: value of type `auth(FungibleToken.Withdraw) &USDCFlow.Vault?` has no member `withdraw`
  --> f344573da140e7a3e921c9dc272c1e73cff13ab2c93200865b477e138667271d:61:32
   |
61 |               from: <- vaultRef.withdraw(amount: balance)
   |                                 ^^^^^^^^ type is optional, consider optional-chaining: ?.withdraw