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`
 --> 98300b2b43751df8fdfe2af8646812e7651db9859e0f36ceb93246d8e657d33a:3:20
  |
3 |     prepare(signer: AuthAccount) {
  |                     ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> 98300b2b43751df8fdfe2af8646812e7651db9859e0f36ceb93246d8e657d33a:9:22
  |
9 |         let account = AuthAccount(payer: signer)
  |                       ^^^^^^^^^^^ not found in this scope