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`
 --> 4b6781f352cfa007b91a24ac7e94f449f92efd58d6ce4d94e9225dd1c442e056:3:17
  |
3 | 	prepare(signer: AuthAccount) {
  | 	                ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> 4b6781f352cfa007b91a24ac7e94f449f92efd58d6ce4d94e9225dd1c442e056:4:13
  |
4 | 		let acct = AuthAccount(payer: signer)
  | 		           ^^^^^^^^^^^ not found in this scope