Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: cannot find type in this scope: `AuthAccount`
 --> bb6e85464290d2b5d00ac540312d74576937bc27fd1d760b95ff7d7910c65b9a:3:20
  |
3 |     prepare(signer: AuthAccount) {
  |                     ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> bb6e85464290d2b5d00ac540312d74576937bc27fd1d760b95ff7d7910c65b9a:9:22
  |
9 |         let account = AuthAccount(payer: signer)
  |                       ^^^^^^^^^^^ not found in this scope