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`
 --> 01449cf4dec61267737545ef5102e857c9bc5f4be959a7629a2f5bf1c68d6def:5:18
  |
5 |   prepare(signer: AuthAccount) {
  |                   ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
  --> 01449cf4dec61267737545ef5102e857c9bc5f4be959a7629a2f5bf1c68d6def:11:18
   |
11 |     let account = AuthAccount(payer: signer)
   |                   ^^^^^^^^^^^ not found in this scope