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`
 --> 871fb71c24c6cac1087db2218910269b06c35b9ec8cf8d00c3928a870f8d2fab:5:18
  |
5 |   prepare(signer: AuthAccount) {
  |                   ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
  --> 871fb71c24c6cac1087db2218910269b06c35b9ec8cf8d00c3928a870f8d2fab:11:18
   |
11 |     let account = AuthAccount(payer: signer)
   |                   ^^^^^^^^^^^ not found in this scope