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`
 --> 372706db74bc4e329335aba01aabd1ce191a787cb8923b350e5913ecbbbbe297:4:17
  |
4 | 	prepare(signer: AuthAccount) {
  | 	                ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> 372706db74bc4e329335aba01aabd1ce191a787cb8923b350e5913ecbbbbe297:5:16
  |
5 | 		let account = AuthAccount(payer: signer)
  | 		              ^^^^^^^^^^^ not found in this scope