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`
 --> 0850f04fe5eb89d69dc070e881cc85679d71930e9046842c0e9109f9968855c7:3:17
  |
3 | 	prepare(signer: AuthAccount) {
  | 	                ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> 0850f04fe5eb89d69dc070e881cc85679d71930e9046842c0e9109f9968855c7:4:13
  |
4 | 		let acct = AuthAccount(payer: signer)
  | 		           ^^^^^^^^^^^ not found in this scope